It's an excessive theory for an idea this simple, but "honest signaling" is a hell of an insight. If anyone who wants a job can send a given signal, it's a poor

It's an excessive theory for an idea this simple, but "honest signaling" is a hell of an insight. If anyone who wants a job can send a given signal, it's a poor signal. If only people with a certain trait can send it, it's a good one - hence personality interviews for communication, hence technical interviews for programming languages.