I have read up on the null hypothesis. Not the case here. The probably don't exist comment comes from a place of logic and evidence. Not just personal belief.
No proof of existence that I am aware of. Lots of evidence that can be explained away. Until there is a type specimen to examine ,test and document then the only conclusion that makes sense to me is probably don't exist.
Franco
I have seem Africa and evidence of the others with telescopes and other forms of scientific evidence. I have also seen UFO'S in January 1978 with my mother.
I have not seen man apes in the flesh or evidence of their existence in the here and now that convinces me of their existence.