How old is mankind? I've asked experts; they say maybe 100,000 or 150,000 years, but no firm fossil evidence before about 50,000 years ago. In the search for this knowledge, I have discovered something that calls itself "Alternative Science," and one Dr. Virginia Steen-McIntyre, whose single Mexican site would put our age at 250,000 years; but the good Doctor is evidently delusional. I personally feel that we should go with the fossil record: Let us say that we developed, diverged from our parent chimpanzee/human stock, rather suddenly, about 57,000 years ago. Is it assumed that we were troglodytes? Think of Marco Polo's "castles of logs and rubbish" that he built on the sands of Sumatra on his voyage back from China, "for a place to be safe from great beasts." Men may always have done so.