I ran across this interesting article last week. If you’ve ever been annoyed by that snarky guy at work (or you’ve ever been that snarky guy at work), you might find it interesting, too.

A neurophysiologist recently recognized what so many of the wry, sardonic, and snide have been practicing for years: sarcasm is important in human interactions. It seems that the success of humans over time has been largely due to our relationships with each other, and according to the author, “sarcasm plays a role in making and breaking alliances and friendships.” Tell me about it.

So next time you’re sharing an eye-rolling with a co-worker at your weekly staff meeting, remember that you’re practicing an ancient bonding ritual that’s important to the advancement of the species (not to mention your career). Just make sure the boss doesn’t see you.