he_who_is_nobody
Well-Known Member
Isotelus said:Your comments on the thylacine and dogs demonstrates that you are unfamiliar with how phylogeny and taxonomy works. I've said multiple times that hundreds to thousands of characters are tested together. Massive computer programs run the traits and compare them, recording both the similarities and differences. They can also determine statistically the value of certain traits shared by a particular group of species (which, by the way, won't work for man-made objects, for which traits actually are chosen subjectively--contrary to your claims). The nonsense logic you're suggesting is applied to organisms in general and thylacines and dogs specifically is a ridiculous comment to make, given that such a thing has never and will never be done in an actual scientific setting, and it's not even remotely similar to how phylogenetics actually works. Give more credit to the scientists running these sorts of test and pay better attention to Rumraket's explanation on how convergence is predictable and testable.
[url=http://theleagueofreason.co.uk/viewtopic.php?f=24&p=99451#p99451 said:ProcInc[/url]"]Ben said:As I pointed out before, the anatomical similarities were known about the Twolf and the American wolf for a long time
No they weren't Ben. From the time of Cuvier and even before the difference between superficial similarity and anatomatical similarity was well established. I already demonstrated to you this difference and demonsntrated to you how the Tasmanian Tiger has all of the traits indicative of a marsupial and none linking it to a wolf.
Padian Slide 87 said:Unlike creationist argumentation, comparative biology is a rigorous science. Rather than just "eyeballing" similarity as creationists do, biologists systematically identify specific characters. Padian shows five of the standard skull features that dogs and wolves share. For example, tooth formulas are a standard feature used for classifying mammals. Dogs and wolves both have two molars in the upper jaw
Padian slide 93 said:Now the Tasmanian "wolf" is compared to a kangaroo -- according to modern biology a much closer evolutionary relative. Pandas claims that "the determination of homologies [is] a matter of subjective judgment" (p. 122) and therefore "the determination of relationship rests upon a subjective judgment" (p. 124). If this is true, the comparative biologist should have difficulty finding the homologies that unite the Tasmanian "wolf" with the kangaroo. Padian shows that these two marsupials share the exact characters that were different between the placental wolf and marsupial "wolf." For example, both have four molars in the upper jaw instead of two...The same characters are found to be shared between the Tasmanian "wolf" and the common Virginia opossum.
A habit of "eyeballing similarity" while simoultaneously insisting the determination of homologies is a matter of "subjective judgement" pretty much sums up your own argumentation here Ben. In fact you described your 'authority' on the matter best:
(emphasis mine)Ben (3rd Jan said:The argument is that they are anatomically similar to wolves, and look homologous. Homology is based on superficial appearance and is used all the time. I saw a bigger difference between Twolf and Kanagaroo than I did between Twolf and Awolf. Take a look again. You dont have to be an expert to spot out the difference."
Well, at least you certainly proved you are no expert.