I just checked it isn't the "atheist" video so it must have been another video then. I'm not sure if Harris said something on the subject. I think Hitchens said that in stone age times it was like 20 or something. I think. And I'm not sure if thats reliable or not, he has been known to get his facts wrong (apparently).
Maybe it was "modern medicine" when did that start?
Most of this (if not all) is speculation, so I'll try and look into it.
Maybe it was "modern medicine" when did that start?
Most of this (if not all) is speculation, so I'll try and look into it.