[BMCDA]

However, bottomline, there is no incontrovertible proof for either side is there?

Proof in the strict sense is only available in mathematics or other formal systems. When it come to science we deal with evidence.

The theory of evolution is pretty solid and backed up by several independent lines of evidence. If you want to read more about this I really recommend the posts of Freeper Ichneumon on this topic. He goes into great detail to explain the different lines of evidence and how they back up common descent.

[GOPPachyderm]

I will read that material, but I suspect that a common designer can also explain the evidence offered for common descent.