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To: Coyoteman

“I’ll stick to science.”

Ah... exactly what are you qualifications as a scientist again?

I’m the defender science. You’re the one that says it cannot prove anything.

Hank


12 posted on 04/29/2008 11:05:40 AM PDT by Hank Kerchief
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To: Hank Kerchief

‘Proof’ is a specific mathematical term where someone ends up with a statement like ‘3 = 3’. Someone else can check their work but they can’t do another ‘proof’ that shows contrary results. Whereas in science a given experiment provides not proof but evidence. Others can perform endless other experiments to try and show contrary results and so on.


17 posted on 04/29/2008 11:33:16 AM PDT by Borges
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To: Hank Kerchief
Ah... exactly what are you qualifications as a scientist again?

Ph.D., 35+ years of experience, and I follow the scientific method.

I’m the defender science. You’re the one that says it cannot prove anything.

From my list of definitions (with a new addition for "proof" from a CalTech physics website):

Theory: a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena; "theories can incorporate facts and laws and tested hypotheses." Addendum: Theories do not grow up to be laws. Theories explain laws

Theory: A scientifically testable general principle or body of principles offered to explain observed phenomena. In scientific usage, a theory is distinct from a hypothesis (or conjecture) that is proposed to explain previously observed phenomena. For a hypothesis to rise to the level of theory, it must predict the existence of new phenomena that are subsequently observed. A theory can be overturned if new phenomena are observed that directly contradict the theory. Source

When a scientific theory has a long history of being supported by verifiable evidence, it is appropriate to speak about "acceptance" of (not "belief" in) the theory; or we can say that we have "confidence" (not "faith") in the theory. It is the dependence on verifiable data and the capability of testing that distinguish scientific theories from matters of faith.

Proof: Except for math and geometry, there is little that is actually proved. Even well-established scientific theories can't be conclusively proved, because--at least in principle--a counter-example might be discovered. Scientific theories are always accepted provisionally, and are regarded as reliable only because they are supported (not proved) by the verifiable facts they purport to explain and by the predictions which they successfully make. All scientific theories are subject to revision (or even rejection) if new data are discovered which necessitates this.

Proof: A term from logic and mathematics describing an argument from premise to conclusion using strictly logical principles. In mathematics, theorems or propositions are established by logical arguments from a set of axioms, the process of establishing a theorem being called a proof.

The colloquial meaning of ‘proof’ causes lots of problems in physics discussion and is best avoided. Since mathematics is such an important part of physics, the mathematician’s meaning of proof should be the only one we use. Also, we often ask students in upper level courses to do proofs of certain theorems of mathematical physics, and we are not asking for experimental demonstration!

So, in a laboratory report, we should not say "We proved Newton's law." Rather say, "Today we demonstrated (or verified) the validity of Newton's law in the particular case of…" Source.


23 posted on 04/29/2008 11:57:23 AM PDT by Coyoteman (Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.)
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