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- From: jgacker@news.gsfc.nasa.gov (James G. Acker)
- Subject: Re: Topic for Discussion?
- Message-ID: <1993Jan25.150359.23939@nsisrv.gsfc.nasa.gov>
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- Date: Mon, 25 Jan 1993 15:03:59 GMT
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-
- Phillip Johnson (philjohn@garnet.berkeley.edu) wrote:
- : I am not sure that it is possible to hold a discussion in this
- : group, because the majority of participants seem to consider the
- : neo-Darwinian theory to be so obviously true that doubt is not
- : taken seriously. On that basis, what is there to discuss?
-
- There's a difference between doubt and debate. Doubt
- drives scientists forward to investigate the uncertainties in a
- theory -- such as the macroevolutionary example you provide below.
- But the reason that so many on this group (and thousands of
- scientists elsewhere) consider the neo-Darwinian theory to be true
- is that there is no viable alternative! Doubt *is* taken
- seriously -- that's why there are so many grad students around.
-
- : large over geological time). If so, it is also reasonable to
- : conclude that the mechanism of macroevolution is an unsolved
- : mystery. This does not necessarily imply supernatural creation,
- : because it is possible that science will discover a naturalistic
- : mechanism at some time in the future. It is also not "anti-
- : science." Indeed, students with inquiring minds may be more
- : attracted to the field of evolutionary biology if they are told
- : that they have an opportunity to try to solve a big mystery,
- : rather than merely to fill in the details of the neo-Darwinian
- : picture. Of course, there can be no guarantee that they will
- : succeed.
-
- This paragraph is one of the best things you've written
- so far. Because it finally acknowledges the frawework of progress
- toward refining a scientific theory. As an example, Einstein's
- theory of relativity made some big (and testable) claims, such as
- gravity's ability to bend light. Only after the experiment (with
- solar occultations) proved him correct did he gain a stronger level
- of acceptance.
- What is unfair is the tenet that "doubt = discredit (or
- disproof)". Even if a macroevolutionary mechanism is never found,
- that does not mean neo-Darwinian theory is wrong. However, it's fair
- to point out that the longer an uncertainty persists in science, more
- firepower and money is brought to bear on the issue. Current example:
- the Super-Conducting SuperCollider and the Higgs boson.
- My own spin on the "macroevolution = cumulative microevolution"
- question: the time element is missing. I think, stressing the "I", that
- rapid, cumulative microevolution, esp. in those apparently chaotic, turbulent
- geologic period transitions, does equal macroevolution. The process
- occurs too quickly to get a geologic "snapshot" of it in progress, unless,
- with Archaeopteryx as the ultimate example, we get lucky.
-
- : My impression is that many participants in this group think that
- : the position stated in the preceding paragraph is unreasonable,
- : and even in some sense reprehensible. Is that correct? If so,
- : why?
-
- I hope I just showed you that I, for one, consider it to be
- the best grasp you've shown on the topic so far.
-
-
-
- : --
- : Phillip E. Johnson
- : School of Law, University of California, Berkeley CA 94720
- :
-