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- Newsgroups: k12.ed.science
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!ux1.cso.uiuc.edu!news.iastate.edu!IASTATE.EDU!danwell
- From: danwell@IASTATE.EDU (Daniel A Ashlock)
- Subject: Re: Evolution
- Message-ID: <1992Dec22.124624@IASTATE.EDU>
- Sender: news@news.iastate.edu (USENET News System)
- Reply-To: danwell@IASTATE.EDU (Daniel A Ashlock)
- Organization: Iowa State University
- References: <31105.2B322E42@puddle.fidonet.org> <102794@netnews.upenn.edu> <1992Dec22.174823.11972@cas.org>
- Date: Tue, 22 Dec 1992 18:46:24 GMT
- Lines: 88
-
- In article <1992Dec22.174823.11972@cas.org>, jem26@cas.org (Jay E. Martin)
- writes:
- >> Science is in the business of finding facts, not truth. If you want
- >>to know something about the truth, go to Doug Arner's philosophy
- >>course down the hall. (The names have been changed to protect the
- >>innocent :-) It is a fact that we share common ancestry with all
- >>other known species on this planet. That's the best a scientist can
- >>say about the subject.
- >>
- >
- > I disagree with with your statement. It is not a "fact" that we share
- > a common ancestry with all other known species on this planet. It is
- > a fact with we share DNA sequences , and in many cases similiar (to
- > varying degrees) DNA with all other known species, but that doesn't
- > "prove" that we have a common ancestry (although is does imply it).
-
- You disagreement is too hasty. Almost all work in science is split
- between finding facts and trying to explain them. Science dug up the
- very fact you cite above, that we share DNA in common with the other
- living species on the planet. In fact science dug up a whole raft
- of facts about the patterns (including junk) in that DNA that do far
- more than imply common ancestry. They support common ancestry so
- strongly that no other theory to explain the facts is given any weight.
- I agree common ancestry is not proved; it just so wildly unlikely that
- we are not descended from one or a few common ancestors that its not
- worth worrying about unless new data come along. So, as far as science
- is concerned it is accepted as a fact we share common descent.
-
- You can't make progress in science unless you accept as facts those bodies
- of knowledge so well supported that there is not even a shadow of doubt at
- present that they are correct. If those bodies of knowledge are in need of
- substantial revision that will come out later. People will do experiments or
- make observations and find the existing theory cannot explain them. Until such
- time as those observations or experiments are done it is acceptable to treat
- them as fact. When writing a biology paper a scientist need not hedge his
- words by saying "if common descent is correct then..." he just act like it is
- true.
-
- In response to your request for qualification, I am
-
- Daniel Ashlock
- Assistant Professor of Mathematics
- (Mathematical Biology Group)
- Iowa State University,
- Department of Mathematics.
-
- I work on mathematical models of evolution and study evolution in order to
- find ideas to rip off for use in computer searches. The buzzwords for these
- two fields of study are Artificial Life and Genetic Algorithms.
-
- > A good researcher
- > will question everything (creationism, evolution, ...).
-
- Sorry, that is incorrect. Good researchers do not question evolution at
- all. They accept it as generally correct and will continue to do so until an
- observation or experiment requires them to stop. Questioning evolution is
- like questioning the use of Newtonian Dynamics in spacecraft navigation.
- Researchers do argue about the implications of evolution and constantly refine
- the details of the theory.
-
- In addition good researchers do not question creationism. They are aware
- that it is an nonscientific belief and take congnizance only when annoyed by
- a creationist.
-
- You seem to have a rather obsolete and idealized notion of scientific
- research. People in science uncover new facts and try to explain them. There
- is a lot of more-or-less friendly argument while hashing out an explaination
- and all explainations are open to revision when needed. Scientists do not
- constantly question well settled explanations that have stood for decades; they
- question them when they fail to explain something they ought to explain.
-
-
- > In time all the things
- > duscussed in this thread will seem obsolete, so stop being so
- > belligerent about what you "know".
-
- This is also not true. Solid work does not become obsolete. You seem to
- think because much work becomes obsolete all work must? Darwin postulated
- common descent. Discoveries since then have shown he was almost certianly
- right. Where did the obsolecence come in?
-
- > Thank you for your attention. I sincerely hope that somebody reading
- > this news group learns something from all this discussion.
-
- Second! (all of the above are, of course, the opinion of one scientist).
-
- Dan
- Danwell@IASTATE.EDU
-