Before I comment further, just what is it you believe homo erectus proves?
You didn’t direct your question to me, but I can answer it. Homo erectus was a now-extinct species of the Homo genus, part of the family of hominins. It may or may not have been a direct ancestor of modern man, but it lived on this planet over a million years ago. It may have been one of the first hunter-gatherers (omnivores) in our genus. (Probably not related to Adam and Eve, however, since they were “made from scratch” only 6000 years ago. Yuk, yuk.)
I didn't claim it "proved" anything. I claimed it was evidence. The challenge was to produce "1 bit of evidence" and that is what I produced. Of course, it will be waved away.