Every company has them, nobody particularly likes working with them and they can drive every colleague to the brink of despair: know-it-alls. They have to give their two cents on every topic, have a different opinion on everything and no matter who makes a suggestion, the know-it-all will certainly have a better idea ready in his eyes.
You can certainly imagine how quickly this behavior overstrains the nerves of colleagues. But what can you do to defend yourself against the constant know-it-all attitude? Which colleagues tend to be particularly know-it-alls and how you can deal with a Dr. Bypass smartness in your department?