Note the gray hair and male pattern baldness. Homo Erectus' era no doubt coincided with emergence of social structures enabled by development of stone tools, weapons, and fire.
These things increased protein levels in the diet tremendously, and fire better protected them from the elements. Naturally, mortality rates dropped, populations increased and, since less time had to be devoted to food gathering, more leisure time was available to devote to developing social roles arising around the campfire.
So why the thick skulls? Probably from these guys beating their heads against cave walls as they dealt with more mouths to feed and women complaining about them leaving their tools lying around.
[ This Message was edited by: expatriate on 2004-02-18 23:40 ]
Just think if we had heads like that today, there would be no need for jack hammers. Just walk outside, slam your head against the concrete for awhile, pull up the broken rubble then call in the cement truck. Presto new drive way!
Would have completely changed warfare in the middle ages too. Trebuchets? Onagers? Bah, just need a legion of men to slam their collective heads against the castle walls.
If you're lucky enough to be on private land and can leave your stand up during the off season you can tie an old piece of cloth or something of the sort to your stand. I like to use an old camo bandana that I have. That way the deer get used to the movement and eventually don't bother even looking up when there is slight movement. This may just give you the time to draw your bow or raise your gun without being detected.