Hunters used stone-tipped spears 200,000 years earlier than previously thought

[4th law of robotics]

47. And there were primitive hominids

swearing that all these weapons are destroying society, they're useless in defending oneself against another tribe or violent animal and if it came down to that the other hominid/saber toothed tiger would just take your stick away and use it on you. Sure the tribe had always had and used weapons, but simple things like rocks or clubs. As their forefathers had intended. Not these new-fangled rocks tied to sticks that could kill at a distance and with great ease.

Those people didn't survive very well.