Grug put sharp rock on end of stick. <|endoftext|> Because when cave grug beat up weaker cave grugs and got really powerful, he passed that down to his son. His son, having the same genes as his tough father, and now having all that stuff, generally repeated the cycle and got more stuff. Cycle repeats. Most monarchs and nobles are just families who grew generational wealth. I'd bet at least a few noble houses got their start on the road to power tens of thousands of years ago. <|endoftext|> 