Talk:Scientific method/Archive 14

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The

(Please don't archive this section: it is a resurrecting issue, and a permanent pointer to discussion is useful)

Shouldn't this article begin with a The? Has this debate already been had? Isn't it, "The Scientific method is a body of techniques..." Mathiastck 06:58, 8 September 2006 (UTC)

Yes, right at the top of Archive 11, there is debate on the definite article The. --Ancheta Wis 08:17, 8 September 2006 (UTC)
Ok well I vote to include "The" next time :) Mathiastck 18:12, 12 September 2006 (UTC)

At the outset of the discussion about this issue, User:Wjbeaty pointed out some of the published current discussion in the field per WP:VER and WP:RS. He said: "Many scientists object to ... the very concept The Scientific Method, and they fight to get it removed from grade-school textbooks. Examples:

Experience has taught that scientific method should be viewed as a cluster of techniques or body of techniques. When diagrammed it might look something like a sunflower with an identifiable core with a bunch of petals representing various fields of science. Add or remove a few petals, and it still looks like a sunflower. Kenosis 19:23, 12 September 2006 (UTC)

My modest opinion: I disagree on "The". A laboratory experiment, a computer simulation, a theoretical model: all may be scientific but are far from using a unique and univocal method. One thing is to single out a body of criteria in order to define if a method of inquiry is scientific, and another is to say that there is only one such method. Also (but I might be wrong), I think there is an implicit usage in Wikipedia so as to use "The..." in reference to a book or a specific theory (e.g. "interpretation of dreams" and "The Interpretation of Dreams"). -- Typewritten 08:21, 29 September 2006 (UTC)
"Experience has taught that scientific method should be viewed as a cluster of techniques"

If this article is about a collection of methods, then the title should be Scientific methods. indil (talk) 02:18, 29 December 2007 (UTC)

A redirect already exists. I personally oppose a page move. This article is referenced by thousands of other articles already, under its current title, and is well-known under its current name. A google search shows that the current title is referenced over 4 times more frequently than the plural. --Ancheta Wis (talk) 11:04, 29 December 2007 (UTC)

Redo the whole thing.

I came over from the Mathematics article. After reading both articles, I've come to a couple of conclusions. First the Mathematics article is very good. Not great because it is too wishy-washy on the Math=science thing. Second, here the Science thing appears to be designed by committee. Nothing I read in the article gives me any warm fuzzies except the beginning where it is mentioned that Science was equated with Knowledge a long time ago.

I can only make two suggestions. Solve the Mathematics=Science problem by including mathematics here in the science definition. Have a definition that shows Mathematics and Logic are also part of science and sciences in themselves.

Try to decide what it is that a scientist does differently from other forms of non-scientific searches. What is it that makes the scientific methods different, more reliable? Talk more about repeatability.

In addition, it is my humble opinion that the Popper rules of falsifiability are use incorrectly by most, and it appears wrongly used here. The word confuses more people than it helps. What is described in the "falsifiability" section is testing/verification, and peer review. Since it is so difficult to nail down an understandable meaning for Poppers theories, it would be better to leave them for another section. The definition of scientific method doesn't need the word falsifiability. There are better ways to identify the methods of science, than using that confusing word.

From what I can tell, scientists don't sit around striving to find a way for their theory to contain falsifiability. They instead look for connection and logic and other possible answers. They also look for consistency. They observe and record. They develop predictions from the data, and they test those predictions for consistency. It is important to make sure we note that a hypothesis or theory is developed from data, not a wild brainstorm and then see if the data can be fit to the theory. It isn't a theory until well tested from many directions.

Botanists mostly just observe, record, organize, and identify. The idea that scientists use many methods is important. The idea that they use a subset for their particular field of science is also important. The idea that assumptions lead to reductions of potential study areas is also important. It is important to have enough variations in methods that failure to observe a phenomenon is not caused by failing to use a valid method.

Just a beginning: Science requires repeatability. Not in everything, but in the background if nothing else. Science requires verification. If happens in another way it is false, and no longer science/knowledge. Science requires a logically sound test procedure. A test must have more than one outcome. Falsified is only one possible outcome of the testing process. Science requires recording of the event. Science requires peer review. Scientific methods are developed to improve the reliability of data, theory, and our general understanding.

Mathematics is repeatable, every time the induction is performed it comes out consistently the same. Mathematics is observable, without observing the logical steps in a poof, the proof isn't done. Mathematics is verifiable. After a proof, it does come out as explained. Mathematics is logically sound, any test comes out the same, see repeatability. Mathematics is recorded. Mathematics is always subjected to peer review. Errors are sometimes found at this stage. Mathematical methods are the reason science is more reliable. To explore/study those methods is a science in itself.

Eric Norby 04:53, 29 January 2007 (UTC)

Eric Norby, I have included George Polya's work in the article. --Ancheta Wis 11:19, 15 September 2007 (UTC)

Has anyone seen this 4-step formulation?

  • Proper scientific methodology usually requires four steps:
    1. Observation. Objectivity is very important at this stage.
    2. The inducement of general hypotheses or possible explanations for what has been observed. Here one must be imaginative yet logical. Occam's Razor should be considered but need not be strictly applied: Entia non sunt multiplicanda, or as it is usually paraphrased, the simplest hypothesis is the best. Entities should not be multiplied unnecessarily.
    3. The deduction of corollary assumptions that must be true if the hypothesis is true. Specific testable predictions are made based on the initial hypothesis.
    4. Testing the hypothesis by investigating and confirming the deduced implications. Observation is repeated and data is gathered with the goal of confirming or falsifying the initial hypothesis.
  • Pseudoscience often omits the last two steps above.

The difference between this 4-step process and what the article says, is that this one recommends drawing conclusions from the hypothesis. The scientist then compares each conclusion with the facts. Any facts which contradict a conclusion invalidate the hypothesis.

Logically, it works like this:

  • Hypothesis: the moon is made of green cheese.
    1. If this is true, then the spectrum of light coming from the moon should match the spectrum for green cheese.
    2. Astronomer X did a spectral analysis of moonlight and found that it did not match green cheese.
    3. Therefore, the hypothesis is untrue.

If you want an example that isn't so light-hearted, we could list the criteria used by medical researchers to determine whether a particular germ causes a disease. Such factors as:

  • Does the disease ever occur without the presence of the germ (or at least antibodies indicating its presence)?
  • Does the germ ever appear without the diserase manifesting? If so, how much? Is there a threshold?

I think this was used in determining whether e. coli bacteria in water makes people sick.

Sorry I don't have all the details at hand - I'm not a card-carrying scientist - but I think I've captured the essentials. Can we work together as "science writers" to fix up the article? --Uncle Ed 15:46, 13 March 2007 (UTC)

See Demarcation problem, which deals with, or should deal with, the issues raised above. ... Kenosis 17:18, 13 March 2007 (UTC)
What a stodgy article! Sounds like it was written by a high-school science teacher. What do they know? Real science as practised by real scientists is more about playing around with things until something interesting turns up. Of course, a scientist has to prepare herself to recognise what is interesting. Well, to the good, this article will drive new people away from science and thereby keep the demand (and salaries up for real scientists like us. Cool!--MajorHazard 01:52, 7 April 2007 (UTC)
User:Ed Poor, I have added material to the article which resembles your commentary. --Ancheta Wis 11:19, 15 September 2007 (UTC)

This page is a diservice.

This article serves only to obfuscate; it is far too long and lacks succinctness. Better to focus on the laymen and leave the philosophy to a separate section.

   The essential elements[3][4][5] of a scientific method[6] are iterations[7], recursions[8],
   interleavings, and orderings of the following:
   * Characterizations (Quantifications, observations[9] , and measurements)
   * Hypotheses[10] (theoretical, hypothetical explanations of observations and measurements)[11]
   * Predictions (reasoning including logical deduction[12] from hypothesis and theory)
   * Experiments[13] (tests of all of the above)

For an outline, the language is verbose and has low readability. The philosophical take on the topic is clear as Kuhn is mentioned before this outline is presented.

   A linearized, pragmatic scheme of the four points above is sometimes offered as a guideline 
   for proceeding:

This is impractical prose with poor grammar.

   7. Publish results

This is not an aspect to scientific inquiry.

Trial and error in never discussed.


128.119.156.218 20:48, 8 September 2007 (UTC)

Welcome to Wikipedia. Thank you for your participation; Scientific method has been practiced for 1000 years, as shown by the citations below. Fleck discussed these concepts (including trial and error, as part of the initial stage of fact gathering) 70 years ago with no response by his readers for 30 years.
Since this is a wiki; all are welcome to give it some thought, write and wait for the responses of others. See: Wikipedia:Five Pillars.
If you select a username you can begin to build a reputation for the quality of your edits.
It may help to read the editing guides before continuing your edits, however. This article has been worked-on by hundreds of editors, with thousands of edits, since the beginning of the encyclopedia, as evidenced by the archives linked above.
I considered a kid-level version of scientific method, but there are philosophical problems with that version which I have been attempting to address in the #Introduction to scientific method below. But since you mentioned it, here goes:
  1. Look
  2. Guess
  3. Tell
  4. Test
The cycle would be 1,2,3, 4. If 4 true, continue with 3, 4, 1, etc; but if 4 false, go back to 2, try a new 3, 4, etc.
The problem is with 1: Look at the horse pictures at the bottom of this talk page. They show clearly that even when we think we know something, we may not truly know. It takes special people to figure this out, and it has been a thousand years of effort on scientific method, so far.
As part of this, how would you answer the following? It is not enough to base scientific method on experience alone:
  • "... the statement of a law - A depends on B - always transcends experience." p.6 —Max Born, Natural Philosophy of Cause and Chance
Imagination is needed as well. (in steps 1, 2, 3, 4 above) --Ancheta Wis 21:47, 8 September 2007 (UTC)
See the newly added intro to the article. It was developed on this talk page over the course of the past 30 days. --Ancheta Wis 12:23, 9 September 2007 (UTC)
In defense of the page, it notes that our observation is intertwined with our perception. It shows how the direct observation of a predicted phenomenon is no proof of a generalization. Yet it shows that repeatability follows, by application of scientific method from one iteration to the next. In 4 steps, iteratively or recursively. It doesn't get much simpler than that. Yet it has taken 1000 years to get to this. I realize that other serious charges can be brought. You can state them and we can address them in turn. For example, I have not brought in Polya and mathematics yet, except in the citations. Stay tuned, or better, contribute. --Ancheta Wis 00:12, 10 September 2007 (UTC)
Why is the "kid version" last?
Why is a simplified introduction considered a "kid version?"
The simplified "kid version" is as obfuscating as the rest of the article.
    I considered a kid-level version of scientific method, but there are philosophical problems
    with that version which I have been attempting to address in the #Introduction to scientific 
    method below. But since you mentioned it, here goes:
       1. Look
       2. Guess
       3. Tell
       4. Test
This is sarcastic, arrogant, and incorrect.
This articles' message is foiled by the messenger. Do not mistake criticism for the article as criticism of its message.
Regarding editing guidelines, "you" are welcome to remove these words at your convenience.
    It takes special people to figure this out
    This article has been worked-on by hundreds of editors, with thousands of edits,
This is also arrogant and claims proof by majority.

Earth to McFly 16:37, 10 September 2007 (UTC)

Earth2McFly, life is short; let's enjoy what we have of it. There have been thousands of edits and tons of passion expended by hundreds of editors on this page already. What we have in the article is the result. I invite you to read, maybe even the archives, if you have the time, and write your contribution, we look forward to the result. --Ancheta Wis 18:43, 10 September 2007 (UTC)
Nice username, by the way. --Ancheta Wis 18:43, 10 September 2007 (UTC)
   Earth2McFly, life is short; let's enjoy what we have of it. 

The nature of Ancheta Wis comments are personal, sarcastic, and attempt humor; stick to the topic. Use proper user names.

   if you have the time, and  write your contribution, we look forward to the result.

"We"? This is the problem. This article is written in a high minded style that clearly assumes its audience is the same as the authors. What is the distribution of people searching "scientific method": novices, professionals, parents, etc. Of the thousands of edits how many of them were devoted to proportioned addressing to these audiences? The answer is the current page.

The Wiki manual of style says to "be bold." Given "you"r arrogant, circuitous, and indistinct responses to the above criticisms, "you" would likely have great difficulty with bold.

Why has Acheta Wis not responded to "Redo the whole thing"?

   you can begin to build a reputation for the quality of your edits.

What purpose would be served by a reputation among fellow editors?

With Google, the greatest inertias are subject to the mouse.

   Nice username, by the way.

"I" do not require your praise. "You" get the last word. Earth to McFly 14:49, 11 September 2007 (UTC)

Evolution

Is it worth including evolution as an example? It stikes me as a pretty good case for the scientific method. 86.129.227.193 13:46, 16 May 2007 (UTC)

Merge suggestion

I suggested to merge the "Non-scientific" stub here. Two arguments: we don't write articles for adjectives and non-scientific method is nothing more than non-scientific method. Mukadderat 00:49, 12 June 2007 (UTC)

Oppose the merge. See the demarcation problem for separating science from non-science. The criterion for separating science from non-science need not be scientific method. For example, if someone holds myth more dearly than truth, there is no way that scientific method could work for him. --Ancheta Wis 08:44, 12 June 2007 (UTC)
Oppose. Nothing would be added by bringing the content here. Banno 08:53, 12 June 2007 (UTC)

Pathological science

This link is more about philosophy of science than about scientific method. I suggest reverting the link until more discussion on this talk page has taken place. --Ancheta Wis 08:51, 12 June 2007 (UTC)

history

it makes no mention about who came up with it!!!!!!!!!!!!!!!!!!!!!!!!!!!!

The quick answer is Galileo. But that would be an injustice to several thousand years of those who came before him. So it would be wrong to credit scientific method to a single 'who'. --Ancheta Wis 08:58, 27 June 2007 (UTC)

never mind there is a link that goes to the history of the scientific method. i think it should be mentioned though. i think a "see below" would be helpful

Star class for rational scepticism

Why Start? Banno 00:32, 12 July 2007 (UTC)

Introduction

I propose augmenting the items on observation, description, etc. from the first elements box, as part of an introductory section on scientific method. The changes and their citations will appear here first for the editors of this article, that we might discuss and improve them here, before altering the article itself. --Ancheta Wis 14:12, 2 September 2007 (UTC)

Science requires a society[1][2]which applies scientific method to projects over an extended period[3] in order to progress.[4]. In this sense, science can be considered to be a cooperative enterprise.

Here is a paragraph from the article which is historiographical in nature, but which is related to the introductory material which I propose to add.

  • "There is a popular misconception, sometimes even taught in science classes, that a scientific idea progresses from being a hypothesis, to being a theory, to being a law, based on how much evidence has been established. This is not the case. Although scientists in different fields may use the three terms somewhat differently (especially the term "hypothesis"), the terms represent different types of scientific understanding which are not subject to the alleged progression. "

The difficulty expressed in the above statement is that we are mixing up the levels of understanding. What was once the opinion of an individual, a conjecture, gets stated, debated, and examined. When a statement gains the power of law, much has already been invested. When capital can be invested, when machinery can be put into place, when a statement has been shown to be repeatable and predictable, then a progression has already taken place. For example, a human being strolling the streets of some metropolis like Chicago or Shanghai is dwarfed by the creations of other human beings, the skyscrapers, the commercial networks, the laws.

Scientific method contains a conundrum, meaning a question whose answer is a conjecture, a question, or a riddle. The reason that scientific method excels at the discovery of new knowledge, that is, knowledge which is not yet known to all, is that we first isolate that which is not yet known to all. We seek the riddle; it is not enough to merely seek an answer, as it is too easy to fool our human nature by merely confirming what we already know. (Karl Popper called this kind of systematic bias, verificationism.) Rather, we posit conjectures, and seek to refute them. In other words, we make guesses[5] and seek to disprove them[6]. (Karl Popper called this falsifiability. See, for example, Popper's 1963 book Conjectures and Refutations.)

"In The Logic of Scientific Discovery ... we are interested in theories with a high degree of corroboration. ... as scientists we do not seek highly probable theories but explanations; that is to say, powerful and improbable theories" -- Karl Popper [7]

When Linus Pauling was pressed for his method of getting good ideas, he responded

The point of Pauling's statement was that he had criteria for determining 'the bad ones'. Like Popper, he was able to distinguish what might be wrong about a conjecture.

  • "You can't depend on your eyes when your imagination[8] is out of focus." —Mark Twain
  • "What I cannot create, I do not understand." —Richard P. Feynman
  • "Research is to see what everybody else has seen, and to think what nobody else has thought" —Albert Szent-Gyorgyi
  • "If we knew what we were doing, it wouldn't be called research, would it?" —Albert Einstein

Hypothetico-deductivism[9] first analyzed scientific method (such as the enumeration of steps 2,3,4)[10] in the nineteenth century. The full statement of steps 1,2,3,4[11] finally arose in the twentieth century:

1. Characterization[12]: Experience[13] and Measurement[14]

2. Hypothesis [15], also called conjecture[16] ,: in logical inference, hypotheses are also called premises or assumptions.[17]

3. Deduction is a logical inference (a prediction) from a conjecture (hypothesis).[18]

4. Falsifiability[19]and Experiment[20] which serve to ground the imagination (a requirement of Francis Bacon).

Iteration example from astronomy: [21]

Recursion example: the Earth is itself a magnet, with its own North and South Poles[22]

--Ancheta Wis 23:50, 2 September 2007 (UTC)

Citations

User:BenB4 has asked for citations on Scientific method. I can provide citations for my own contributions, but quickly, I learned scientific method by word of mouth; that is probably the reason that there are so many versions, as each scientist has his or her own teacher. Here is a list of my sources (I can provide page numbers, except for the verbal communications which I was fortunate enough to learn from. Page numbers will have to wait til the weekend.). It will be apparent that my sources are biased toward writers in English:

Scientific method by scientists

  • Galileo, Two New Sciences[23]
  • William Glen, Mass-Extinction Debates: How science works in a crisis
  • Andrew J. Galambos, Sic Itur ad Astra (who learned it from Felix Ehrenhaft)
  • William Stanley Jevons, The principles of science: a treatise on logic and scientific method
  • Ørsted, Selected Scientific Works of Hans Christian Ørsted
  • Max Born, Natural Philosophy of Cause and Chance

Logic

  • Flora Dinkines, Introduction to Mathematical Logic
  • Wittgenstein, Tractatus Logico-Philosophicus
  • Morris R. Cohen and Ernst Nagel, An Introduction to Logic and Scientific Method

Philosophy of science

  • Klemke, Hollinger and Kline (eds.) Introductory Readings in the Philosophy of Science
  • Peter Godfrey-Smith, Theory and Reality: An introduction to the philosophy of science
  • Galileo, The Assayer


Sociology of science

  • Ludwik Fleck, Genesis and Development of a Scientific Fact[24]
  • Everett M. Rogers (1995) Diffusion of Innovations 4th ed. ISBN 0-02-926671-8

Science

  • Forest Ray Moulton and Justus J. Schifferes (eds.) The Autobiography of Science
  • Feynman, Lectures on Physics (my teacher)
  • G. Toraldo di Francia, The Investigation of the Physical World
  • Cesare Emiliani, The Scientific Companion
  • Leonard C. Bruno, The Landmarks of Science (first editions owned by the Library of Congress)

Mathematical method[25],[26]

Experiment

  • J. P. Holman, Experimental methods for engineers
  • Ziman's memoir of P. W. Bridgman's experimental method - how he would never publish the last decimal of any of his observations/measurements.

I was fortunate to have discussed this subject since high school, with other students from around the US, at a National Science Foundation project which probably still brings students and scientists together every summer. (As an example, we yakked about the robotic exploration of space, which if it had been implemented, would have saved the lives of some astronauts and a lot of money. This was before the shuttle program was started.) --Ancheta Wis 08:42, 16 August 2007 (UTC)


Citations are prototyped below: --Ancheta Wis 18:37, 8 September 2007 (UTC)

Where would you propose to add some of this material? I am beginning to think that a topic fork may be more appropriate, such as Introduction to scientific method. ... Kenosis 00:17, 4 September 2007 (UTC)

Kenosis, I propose adding the Alhacen material in an Introduction section. That much clearly needs to be added. But the philosophical objections to unaided observation could be left out as too much for the first-time reader; my position is that Observation, Description, and Explanation are intertwined. That was the problem with medieval science, before the role of criticism and experiment blew open natural philosophy. The Heisenberg quote which was in the article several years ago stated this quite clearly. That also is the reason that Observation ought not to be baldly stated as the first step. It takes a special person 'to see what everyone has seen but to think what no one else has thought'. Popper states it quite clearly. It can also be found in Feynman, Character of Physical Law in his last chapter (how we start by guessing new laws).
The material needs to be introductory. When you consider that every freshman science book has about two pages on scientific method, we clearly need to step up and state this material more fully. As you already know, its sources are from all over science but this page is just about the only place where someone can see it from a synoptic perspective.
--Ancheta Wis 01:13, 4 September 2007 (UTC)
I personally have no problem with working over the two callout boxes with the bulleted summaries, nor even with revisiting the lead and the rest of the text to find a way to integrate what you've pulled together. The first callout box was originally drawn in significant part from Elmes,et al, Research Methods in Psychology (I'll need to get back to you on which edition/date). Recall that experimental psychology has needed to pay close attention to the demarcation problem in order to secure experimental psychology's place among the empirical sciences that use a valid, reliable form of scientific method. Since then, that first callout box has been worked over a bit by various contributors, resulting in some additional conflation of Observation, Description, and Explanation that others have thrown in there willy-nilly. Recently I reworked it to bring it somewhat back in line, but left a bit of the added material. A synoptic approach needs to be regarded as the conceptual minefield that it in fact is, IMO. The component parts, of which any "list of characteristics of scientific method" consists, depend very much on what level of approach one is taking in the description. Thus, "control" may be intended to mean the general objective of seeking to affect the outcome of events by the understanding of the phenomena under scrutiny, or it may mean the use of an unmanipulated indendendant variable (the "control") in comparison to a manipulated independent variable. "Observation" may mean the process prior to narrowing down a research focus to a particular set of variables, or it may run through the entire process of iterations and reiterations. Description too may describe the objective of (pardon me) objectively describing in finer-and-finer detail or other more-and-more accurate ways the phenomena, the dynamics, of the natural world and human behavior within it, and "description" may refer to something that runs through the entire process -- for instance, description is expected of everything pertinent to any experiment today is expected to be made available for scrutiny by others interested in the same phenomena. "Explanation" is somewhat more specific, and deserves, IMO, to be left in there in some form or other, because "explanation" in the context of scientific method refers to identification of cause-and-effect relationships as differentiated from mere correlation of events, or mere naming of something seen. I suspect that some caution needs to be exercised here with a complete rewrite of either the lead or the beginning of the "Elements of scientific method section". No matter what approach one takes, some bases are likely to remain uncovered in an article this length.

That said, I have no serious objection to discussing how to integrate the material you've just brought into the mix. Nice work, by the way, in preliminarily organizing it. ... Kenosis 02:22, 4 September 2007 (UTC)

Kenosis, Thank you for your kind words. Now that I understand that you are approaching this from the Experimental Psychology side, we could indeed work together to integrate some material that will be helpful for the lot of us. (I have an interest in the visual system so we might meet in the middle here.) --Ancheta Wis 02:43, 4 September 2007 (UTC)
Sure, but not just experimental psychology. I was merely attempting to point out that that particular field has undertaken to validate psychology as valid empirical science and to teach its upcoming practitioners valid scientific method. As such it is a valuable area of resource to draw upon. My own area of focus, which will remain undisclosed, requres that I be familiar with what's been done in that realm, but not limited to it. Anyway, I think this will take awhile to do it well, given the fits that participants went through to arrive at the article's present state, and deserves to be well discussed over, say, a month? or so? so it can be clarified as to what aspects of philosophy of science, theory of scientific method (early empiricism, positivism, Popper and others, through the modern synthesis by, e.g. the AAAS and similar organizations in other nations), through the several newer books that deal with practical acpects of scientific method, such as Gauch, along with others you've mentioned that run from the early foundations through the contemporary manifestations. If we and other participants keep it in perspective, it sounds workable, with the potential to end up with a better, more stable article. And thanks again. ... Kenosis 02:53, 4 September 2007 (UTC)
I have removed the callout box I mentioned above, since it is derived only in part from the source that I mentioned above. I wouldn't want to add anything that might arguably be WP:OR. ... Kenosis 05:01, 4 September 2007 (UTC)
Ouch. Sorry.

--Ancheta Wis 11:30, 4 September 2007 (UTC)

Fleck and Kuhn

Thomas Kuhn's Structure of Scientific Revolutions cites Fleck's book, which appeared about the same time as Karl Popper's Logik der Forschung. Popper found immediate success but Fleck had to wait for recognition. Kuhn found Fleck's book by reading Hans Reichenbach's Experience and Prediction, who had to cite Fleck's title Genesis and Development of a Scientific Fact (written in German, 1935, Entstehung und Entwickelung einer wissenschaftlichen Tatsache: Einführung in die Lehre vom Denkstil und Denkkollectiv), although Reichenbach opposed Fleck's concept. Fleck, a Polish physician, selected the history of the Wasserman test as his vehicle for conclusions about sociology of science.

Pages 20-21 of Fleck, ISBN 0-226-25325-2 state "Biology taught me that a field undergoing development should be investigated always from the viewpoint of its past development. ... It is nonsense that the history of cognition has as little to do with science as, for example, the history of the telephone with telephone conversations. At least three-quarters if not the entire content of science is conditioned by the history of ideas, psychology and the sociology of ideas and is thus explicable in these terms.".

Kenosis, it ought to be possible to condense Fleck's thesis into a few sentences, which I propose as background for the problem of the theory-laden character of observation. You can expect this section to contain this precis as I read through Fleck's book. --Ancheta Wis 11:35, 5 September 2007 (UTC)

Some key concepts: Denkstil (thought style), and Denkkollektiv (thought collective). Fleck, p.64: "... to investigate successfully how assumptions change requires research into thought styles. ... [which] calls for a sociological method in epistemology."

Fleck, p.76: "From false assumptions and irreproducible initial experiments an important discovery has resulted after many errors and detours. ... If any discovery is to be made accessible to investigation, the social point of view must be adopted; that is, the discovery must be regarded as a social event."

Fleck's concept of fact: a coalition of viewpoints, housed in 'thought collectives'[27] (such as Wikipedia) which progresses from personal opinion, to journal entries and journal articles, to 'vademecum science': "a juggernaut of persuasion" (Bazerman 1988) [28]

Fleck p.84: "Observation and experiment are subject to a very popular myth. ... The knower is seen as a ... Julius Caesar winning his battles according to ... formula. Even research workers will admit that the first observation may have been a little imprecise, whereas the second and third were 'adjusted to the facts' ... until tradition, education, and familiarity have produced a readiness for stylized (that is directed and restricted) perception and action; until an answer becomes largely pre-formed in the question, and a decision confined merely to 'yes' or 'no' or perhaps to a numerical determination; until methods and apparatus automatically carry out the greatest part of the mental work for us." Fleck labels this thought style (Denkstil).

Fleck pp.92: "All empirical discovery can therefore be construed as a supplement, development, or transformation of the thought style.".


Fleck pp.94-95: (A description of variation in observation -- 1902, Neisser and Massini) "This example also exhibits three stages:

  • (1) vague visual perception and inadequate initial observation;
  • (2) an irrational, concept-forming, and style-converting state of experience;
  • (3) developed, reproducible, and stylized visual perception of form.

... The first, chaotically styled observation resembles a chaos of feeling: amazement, a searching for similarities, trial by experiment, retraction as well as hope and disappointment. Feeling, will and intellect all function together as an indivisible unit. The research worker gropes but everything recedes, and nowhere is there a firm support. Everything seems to be an artificial effect inspired by his own personal will. ... [H]e must distinguish that which obeys his will from that which arises spontaneously and opposes it. This [resistance] is the firm ground that he, as representative of the thought collective [(Denkkollectiv)], continuously seeks. ...

This is how a fact arises. At first there is a signal of resistance[29] in the chaotic initial thinking[30], then a definite thought constraint, and finally a form to be directly perceived. A fact always occurs in the context of the history of thought and is always the result of a definite thought style."[31]

Fleck p.99: "We can ... define thought style as [the readiness for] directed perception, with corresponding mental and objective assimilation of what has been so perceived. ... Because it belongs to a community, the thought style of the collective undergoes social reinforcement. ... It constrains the individual by determining 'what can be thought in no other way.' ... Heretics who do not share this collective mood and are rated as criminals will be burned at the stake [punished]... ."


Draft of a section for the article.
File:Ibn haithem portrait.jpg
Ibn Al-Haytham 965 – 1039

Introduction to scientific method

Alhacen: light travels in straight lines

From Alhacen (Ibn Al-Haytham 965 – 1039, a pioneer of scientific method) to the present day, the emphasis has been on seeking truth: "Truth is sought for its own sake. And those who are engaged upon the quest for anything for its own sake are not interested in other things. Finding the truth is difficult, and the road to it is rough. ..." [32]

"How does light travel through transparent bodies? Light travels through transparent bodies in straight lines only. ... We have explained this exhaustively in our Book of Optics. But let us now mention something to prove this convincingly: the fact that light travels in straight lines is clearly observed in the lights which enter into dark rooms through holes. ... the entering light will be clearly observable in the dust which fills the air." -- Alhacen[33]

The conjecture that "Light travels through transparent bodies in straight lines only", was corroborated by Alhacen only after years of effort. His demonstration of the conjecture was to place a straight stick or a taut thread next to the light beam[34], to prove that light travels in a straight line.

Thus scientific method has been practiced by some for at least one thousand years. There are difficulties in a formulaic statement of method, however. As William Whewell noted in his History of Inductive Science and in Philosophy of Inductive Science, "invention, sagacity, genius" are required at every step in scientific method. It is not enough to base scientific method on experience alone[35]; multiple steps are needed in scientific method, ranging from our experience to our imagination, back and forth.

In the twentieth century, a hypothetico-deductive model for scientific method was formulated:

  1. Use your experience - consider the problem and try to make sense of it. Look for previous explanations; if this is a new problem to you, then do #2:
  2. Conjecture or explanation - when nothing else is yet known, try to state your explanation, to someone else, or to your notebook;
  3. Deduce a prediction from that explanation- if #2 were true, then state a consequence of that explanation
  4. Test - look for the opposite of that consequence to try disprove it. It is a logical error to seek #3 directly. This error is called affirming the consequent.

This model underlies the scientific revolution. One thousand years ago, Alhacen demonstrated the importance of steps 1 and 4. Galileo also showed the importance of step 4 (also called Experiment) in Two New Sciences. One possible sequence in this model would be 1,2,3, 4. If the outcome of 4 holds, and 3 is not yet disproven, you may continue with 3, 4, 1, and so forth; but if the outcome of 4 shows 3 to be false, you will have go back to 2 and try to invent a new 2, deduce a new 3, look for 4, and so forth. For a more formal discussion, see below.

In the twentieth century, we found that we need to consider our experiences more carefully, because our experience may be biased, and that we need to be more exact when describing our experiences. These considerations are discussed below.

Truth and myth

A myth need not be true (although a myth can be true). [36]

Eadweard Muybridge's studies of a horse galloping

Needham's Science and Civilisation in China uses the 'flying horse' image as an example of observation: in it, a horse's legs are depicted as splayed, when the stop-action picture by Eadweard Muybridge shows otherwise. Note that the moment that no hoof is touching the ground, the horse's legs are gathered together and are not splayed.

flying horse depiction

There are other paintings with the incorrect flying horse observation. This demonstrates Ludwik Fleck's caution that we see what we expect to observe, until shown otherwise.


End of draft section for the article.

Comment invited. If it is OK with the community, I propose to put this draft as introduction to the article. --Ancheta Wis 10:16, 9 September 2007 (UTC)

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