Comment Re:Why still depend on observation? (Score 1) 186
And after reading a paper about how most arthropods may actually hybrids between two or more original animals, I completely gave up on that idea. Some people think that an insect and its larvae were originally two separate animals. So on which branch of the tree do you place the hybrid ?
Are you sure you parsed that correctly? "Some people originally believed that an insect and its larvae were two separate animals" and "some people think that an insect and its larvae were originally two separate animals" are two non-equivalent statements. I do know that there have been some species where the adults were so morphologically distinct and so divergent in lifestyle and habitat from the larvae that the connection had never been made between the two until recently. What exactly would be the mechanism for two species to glom together such that one becomes the progenitor for the other?