Keep saying you don't know until you do

"Great decisions begin with really great people and a simple statement: I don't know. The research evidence on that is very clear—that the leaders who ended up setting things in place that produced extraordinary results over time, and a series of great decisions over time, really were very comfortable saying "I don't know" until they knew.

And really, they were just being honest. I mean, which is best? Lying—meaning saying you don't know when you've already made up your mind? Or presuming to know when you don't and therefore lying to yourself? Or speaking the truth? Which is, 'I don't yet know, but I know we have to get it right.'"

Source: Jim Collins, in Fortune magazine, at this link. Pie chart