when that arrow head meant the difference between dining and starving, you can betcha every ounce of ingenuity was poured into it.
I’m a lithic technologist, and I take the opposite view: When your stomach is growling with hunger, anything pointed enough to poke a hole will do; when you are fat and happy, then (and only then) can you afford to take the time, effort (and risk) to turn out out a perfect, ultra-thinned work of art...