Actually you could boil it down to being able to handle and use well:

1. Any variant of a wheel in various combinations.
2. Ditto an inclined plane.
3. Ditto a lever
4. Ditto ropes, lines and wires.

and any combination thereof.

ANyway it's silly. Seems to me a man grows up learning the tools his civilization has to offer. I consider myself blessed to have been exposed to as many as I have, from clubs to high-speed Macs and routers. Just stroll through any Home Depot.

And I have sat with folks whose tool chest consisted of one frying pan, one machete, and an ancient muzzle-loading rifle, who lived on jungle snakes and local greens.

They'd go crazy in Home Depot!!

A