if we are descended from pond slime & apes...?

Bacci asks:

"If we are descended from pond slime and apes why is there no other strain of developed beings apart from people?"

What a ripper.

Well Bacci, who says we are the only ones?
We might be the most advanced ones and we might also be the only physical ones on this plane, for all we know.
So much could go on in between that only time and space separate our visual connection to such a potential.

Thats my mental dragnet - it was a ripper Q.

L