But that shouldn't obscure the fact that there's a strong cognitive bias at play here. "Because people assume they have adequate information, they enter judgment and decision-making processes with less humility and more confidence than they might if they were worrying whether they knew the whole story or not," Gehlbach, Robinson, and Fletcher.

The world is full of people who think they know everything to make their decisions. The thing is, is that you can never have all the information that is out there to make your decision, you can only have a piece of it. People have to get used to and practice making decisions on partial information.