Originally Posted by
DRay563
Salty, did you read my previous posts? If you have group 1 that splits into two groups and they each evolve separately, you will have groups 2 and 2a, where 2 is the group that evolved elsewhere and 2a is the group that evolved in the habitat that group 1 lived in. For group 2a to exist, group 1 must have died out because group 2a is an evolutionary result of group 1, such that group 1 is inferior to group 2a in the same environment. If, therefore, group 2 moves back, they would not encounter group 1 (their predecessor) but group 2a, which is a co-evolutionary group and not their predecessor.
The only way your theory will work is to assume that group 1 doesn't evolve over the course of time that group 2 does evolve, but this is denying the dynamics of evolution and assuming a static mode of existence. While this can potentially be seen in some modes of living (like micro, as some of the TB cells found in ancient Egyptian tombs were identical to modern day TB cells, no reference, remembering it from a video I watched 4 years ago), I wouldn't think it a plausible assumption given creatures of a macro scale. So your premise is based on an assumption that I wouldn't think would line up with reality; therefore, your conclusion is questionable at best, if not in error.
Daniel