The people that did a lot of silly looking things probably had a harder time finding partners for reproduction. So for something like safety with silliness to r

The people that did a lot of silly looking things probably had a harder time finding partners for reproduction. So for something like safety with silliness to reproduce it would need a significant impact on our chance to survive. Looking at it this way workplace safety barely mattered until very recently. Before the big killers were the lack of food and vaccinations. It's only since society became as safe as it is today, that these smaller safety goals even seem to matter.