system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do bees, bumblebees and wasps all have the same yellow black color pattern?
gpt
Many of them (though not all of them) can sting. The first ones that could sting evolved a distinct pattern to warn predators that they could sting - better to not even be in the situation where you might get hurt, right? But then some of the non-stinging insects evolved the same pattern because predators who avoid black-and-yellow insects on principle would avoid them anyway.

It's called mimicry, and it's a fantastic, if entirely accidental, strategy for self-defense. The fact that they chose black and yellow as the "agreed upon" pattern was totally arbitrary save for the fact that it's visible in their native environment.