Dr. Bob Kistler
Bethel College
Science, Technology & the Pursuit of Truth

Scientific Methods and Models

   

 

What is science? Responses from our last class.

sci·ence    ( P )  Pronunciation Key  (sns) n.
1. a. The observation, identification, description, experimental investigation,
and theoretical explanation of phenomena.
b. Such activities restricted to a class of natural phenomena.
c. Such activities applied to an object of inquiry or study.
2. Methodological activity, discipline, or study: I've got packing a suitcase
down to a science.
3. An activity that appears to require study and method: the science of
purchasing.
4. Knowledge, especially that gained through experience.
5. Science Christian Science.
http://dictionary.reference.com/search?q=science

Natural phenomenon
Social science
Natural science
food science, culinary science,
investigation - using science
testing, controlling, manipulation
processes
Scientists don't define science.
Science has literacy
describe and understand the nature of the universe
the scientific method is post Bacon, what was it before - Aristotle?
philosophy of how to go about science = the scientific method.
Could we have a working definition. Can a concept be too nebulous to haave an effective definition?

But what really is science?

The study of the basic philosophies or ideologies of scientists is very difficult because they are rarely articulated. They largely consist of silent assumptions that are taken so completely for grated that they are never mentioned. The historian of biology encourners some of his greatest difficulties when trying to ferret out such silent assumptions; and anyone who attempts to questin these "eternal truths" encounters formidable resistance.
Mayr, Ernst 1982. The Growth of Biological Thought, Harvard University Press, Cambridge, MA

Surprising new forms of collective behavior arise from what appear to be sponstaneous apperances of increasing levels of complexity, whether at the physical, chemical, biological, or symbolic levels. This strikes me as the principal unifying theme that runs throught all we know, or think we know, about the world around us.
McNeill, William H. 1998. History and the Scientific Worldview.  History and Theory,   37 (1):1-14

 

Here is what I see as different.
I think that in modern society we accept the noun part of science to readily as science. - the book of facts- the knowledge base.  What we don't see is the ACTIVE process.
  • Science is a "way of knowing" - always a verb - never a noun [You might say that the noun aspect of science like you would find in a textbook - the body of knowledge of science- is simply more "empirical" data and not science itself.
  • Can we create a MODEL of SCIENCE itself?
    • Divide up into 3-4 groups and use the tools in Microsoft word  (or powerpoint) to create a one page model of science.

    Model1     Model2     Model 3Click for large versions


  • Baur SummaryH. H. Baur models different "types" of science in the figure shown at right: (click image to enlarge)


  • Karl Popper summarizes the idea of a good scientific "model" in this way:
    1. It is easy to obtain confirmations, or verifications, for nearly every theory-if we look for confirmations.
    2. Confirmations should count only if they are the result of risky predictions; that is to say, if, unenlightened by the theory in question, we should have expected an event which was incompatible with the theory-an event which would have refuted the theory.
    3. Every "good" scientific theory is a prohibition: it forbids certain things to happen. The more a theory forbids, the better it is.
    4. A theory which is not refutable by any conceivable event is nonscientific. Irrefutability is not a virtue of a theory (as people often think) but a vice.
    5. Every genuine test of a theory is an attempt to falsify it, or to refute it. Testability is falsifiability; but there are degrees of testability: some theories are more testable, more exposed to refutation, than others; they take, as it were, greater risks.
    6. Confirming evidence should not count except when it is the result of a genuine test of the theory; and this means that it can be presented as a serious but unsuccessful attempt to falsify the theory. (I now speak in such cases of "corroborating evidence")
    7. Some genuinely testable theories, when found to be false, are still upheld by their admirers-for example by introducing ad hoc some auxiliary assumption, or by reinterpreting the theory ad hoc in such a way that it escapes refutation. Such a procedure is always possible, but it rescues the theory from refutation only at the price of destroying, or at least lowering, its scientific status. (I later described such a rescuing operation as a "conventionalist twist" or a "conventionalist stratagem".
    One can sum up all this by saying that the criterion of the scientific status of a theory is its falsifiability, or refutability, or testability.

 

  • Other Models of Science
    • Del Ratzsch (in R. T. Wright, Biology through the eyes of faith) - a tripartite model

3 part model of science

      • DATA
        • ARE EMPIRICAL - GATHERED THROUGH THE SENSES

          A. OBSERVATIONS

          B. MEASUREMENTS

          C. EXPERIMENTATION

      • THEORIES
        • ARE THE GOAL OF SCIENCE: TO DEVELOP SOME RATIONAL AND RELIABLE EXPLANATIONS OF THE WAY THE CREATION WORKS
          • Components of a good Theory
            A.Objectivity
            B. Rationality
            C. Generality

traditional science model*
(traditionally curiosity » observation » hypothesis formulation based upon observed pattern» hypothesis testing » retesting or define theory which is called the hypothetico-deductive method)

 

      • SHAPING PRINCIPLES
        ARE THE CONSCIOUS AND UNCONSCIOUS VALUES AND ASSUMPTIONS THAT WE BRING TO THE PROCESS OF SCIENCE.  (WORLDVIEW)
        A. CULTURE
        B. BELIEFS
        C. INTUITION

 

Science has three major objectives according to biologist F. Ayala (1968) (In: Mayer, E. 1982. The growth of biological thought. Harvard Univ Press. Cambridge, MA)

  • to seek to organize knowledge in a systematic way, endeavoring to discover patterns of relationship among phenomena and processes,
  • to strive to   provide explanations for the occurrence of events and
  • to propose explanatory hypotheses that must be testable, that is accessible to the possibility of rejection.  More broadly, science attempts to subsume the vast diversity of the phenomena and processes of nature under a much smaller number of explanatory principles.
 
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links action schedule resources syllabus discussion September 10, 2003