Are entrepreneurs crazy?

While Gartner doesn't actually call entrepreneurs crazy, he does say they’re not entirely normal. He says that entrepreneurs – especially serial entrepreneurs – have a specific psychiatric disorder known as hypomania, which may be the wellspring for the talent it takes to be an entrepreneur:

He added: "Hypomanics are brimming with infectious energy, irrational confidence and really big ideas. They think, talk, move and make decisions quickly. Anyone who slows them down with questions 'just doesn't get it'. While hypomanics aren't mental cases, 'normal' isn't the first word that comes to mind when describing them. Hypomanics live on the edge between normal and abnormal."