here's your nested hierarchy, notconspiracy
"Another development that has undermined evolution is the spread of computers into evolutionary biology. Basically, computers have shown that the neat evolutionary trees that get drawn up are in fact based on imaginary relations of similarity and difference that owe more to the human mind's tendency to perceive patterns than to the raw biological data. Computers have shown that when the characteristics of different living things are encoded in numerical form and the computer is asked to sort them into sequences based on their similarities and differences, the computer can find any number of ways of doing so that have just as much support in the data as those drawn up by humans to fit an evolutionary tree. The data say "no evolution" just as loudly as they say "evolution"; it's just the pattern-craving human mind that gives prominence to the former way of viewing it. This is known as phenetic analysis. When the computer is constrained to push the data into an evolutionary tree, (this is called cladistic analysis) it tends to generate trees with all species as individual twigs and no species forming the crucial lower branches of the tree that evolution demands. As a result of this, many biologists have in practice stopped using the idea of ancestors and descendants when classifying new species. When the British Museum of Natural History did this a few years ago, they started a small war in scientific circles."
intermediate forms
Evolution also suffers from the problem that many putative sequences which look logical based on the progression of one set of anatomical characteristics suddenly look illogical when attention is switched to another set. For example, the lungfish superficially seems to make a good intermediate between fish and amphibian, until one examines the rest of its internal organs, which are not intermediate in character, nor are the ways in which its eggs develop. And if different species have common ancestors, it would be reasonable to expect that similar structures in the different species be specified in similar ways in their DNA and develop in similar ways in their embryos; this is frequently not so. So evolutionary relationships depend upon an arbitrary choice of which characteristics of the organisms in question are considered most important, and different relationships can be "proved" at will. *
endogenous retroviruses
I already told you a few times before that humans and chimps DNA are very similar (which doesn't necessarily mean there was a common ancestor), there could be spots in our genes that are prone to be inserted, so the virus could have affected both the same way.
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