quote:Originally posted by Lorenzo7: Third, the embryos of fish, amphibians, birds and mammals look virtually identical in an early stage of development, becoming different only at later stages. ...while the third is downright false.
I take it that you have never suffered through a semester or even () a year of vertebrate embryology. As someone who has (thankfully long enough ago that much of the tedium has departed from memory ) I can tell you that you are wrong. I think that you are confusing some of Haeckels statements (Ontogeny Recapitulates Phylogeny) with modern embryology (no, Ontgeny does not recapitulate phylogeny, at least not through end terminal addition as Haeckel claimed although molecular biology indicates that earlier stage alterations are far more key). Many aspects of the early stages are very similar, and the differences between the branchpoints are often the focus of intense molecular biology study to understand how mutations lead to the alterations in the molecular pathways taken by the organism. Please wait untill you have sweated through the first part of the course, just trying to tell pig from chicken from human (it is possible, but just barely) in the early stages of development before you make statements like this. At a minimum please look beyond either a high school text book and your local creationist "literature".
------------------ "Chance favors the prepared mind." L. Pasteur Taz
quote:Originally posted by Peter: Time doesn't actually exist (try measuring it directly like-for-like).
It is a convenient abtraction that fits with our perception of reality.
Hey Peter, what do you think of the concept that time, per say, is really only a measure of the increase in the universal entropy. And, just so that there is no confusion, I understand that while entropy may be increasing as a universal measure, it has local flucuations, ie areas of negative entropy, that can partially account for things such as life and evolution. God, that was a long sentance .
Arggghhhh, forgot my signature "Chance Favors the Prepared Mind" L. Pasteur Taz
[This message has been edited by Dr_Tazimus_maximus, 04-01-2002]