We killed off our competition either directly or by simply out-competing them in their niche. To me, this is also a convenient explaination for some of our odd behaviours such as racism/xenophobia; warring cultures; and nearly universal ancient legends of tiny humanoids (elves etc.), giant humanoids, bigfoot/yeti, etc.
Just to clarify, I am not attempting to justify racism or xenophobia! It was just a random idea I had when trying to understand those concepts in an objective manner. I realize these are emotionally charged topics, but that doesn't stop me from wondering "What makes us do the things we do?"
For example, wouldn't features such as the bell-shaped chest and longer (front to back) head show up from time to time in their decendants?
How did you get a pic of me Jo
Actually Jo there is a resemblance to both And I also know where your house is too