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- Path: sparky!uunet!ogicse!emory!swrinde!elroy.jpl.nasa.gov!nntp-server.caltech.edu!SOL1.GPS.CALTECH.EDU!CARL
- From: carl@SOL1.GPS.CALTECH.EDU (Carl J Lydick)
- Newsgroups: sci.skeptic
- Subject: Re: Let's cut to the evolutionary chase
- Message-ID: <1eoe9vINN866@gap.caltech.edu>
- Date: 22 Nov 92 16:59:43 GMT
- Article-I.D.: gap.1eoe9vINN866
- References: <1992Nov21.092244.462@panix.com>
- Reply-To: carl@SOL1.GPS.CALTECH.EDU
- Distribution: world
- Organization: HST Wide Field/Planetary Camera
- Lines: 47
- NNTP-Posting-Host: sol1.gps.caltech.edu
-
- In article <1992Nov21.092244.462@panix.com>, arandia@panix.com (Joel Arandia) writes:
- >What are the arguments used by creationists against the theory of evolution?
- >What do evolutionists say in return?
-
- First, there's the hoary old "but it's only a theory." Thus do the
- creationists make it quite clear from the outset that they know nothing
- whatever about evolutionary theory or science in general. Armed with this
- knowledge, the person to whom they're talking can anticipate the following
- assertions:
- 1) "Speciation has never been observed." This claim is false.
- Speciation has been observed in a number of insects and plants;
- 2) "There are no intermediate forms in the fossil record." This claim
- is either false (there are LOTS of intermediate forms) or
- unfalsifiable (suppose you find an "intermediate form"; the
- creationist will immediately demand another fossil intermediate
- between this one and one of the first two. The process will be
- repeated until you run out of fossils. When dealing with this
- claim, you'd do well to get the creationist to define "intermediate
- form" before you start producing evidence).;
- 3) "Carbon-14 dating has given anomalous ages, including dating
- material from a living creature at several thousand years old."
- Such anomalies exist. They've been adequately explained. C14
- dating only works if the organism's source of carbon is from the
- atmosphere (possibly via short-lived plants, animals that eat such
- plants, etc.). Some organisms get some of their carbon from
- non-atmospheric sources (e.g., carbon from carbonates that get
- dissolved in seawater), and for these, C14 dating doesn't work.
- Remember: C14 dating is dating the carbon in the critter; not the
- critter itself.
- 4) "C14 dating assumes that the amount of C14 being produced is
- constant, but since the sun's output varies, so does the C14
- production rate." That's why C14 has been calibrated using
- dendrochronology.
-
- >Isn't there a file out there containing this info? If someone has it could
- >s/he mail it to me?
-
- You want the sci.skeptic and talk.origins FAQs. I think they're both posted
- monthly to the respective groups.
- --------------------------------------------------------------------------------
- Carl J Lydick | INTERnet: CARL@SOL1.GPS.CALTECH.EDU | NSI/HEPnet: SOL1::CARL
-
- Disclaimer: Hey, I understand VAXen and VMS. That's what I get paid for. My
- understanding of astronomy is purely at the amateur level (or below). So
- unless what I'm saying is directly related to VAX/VMS, don't hold me or my
- organization responsible for it. If it IS related to VAX/VMS, you can try to
- hold me responsible for it, but my organization had nothing to do with it.
-