Without a doubt
Occasionally, people in power come to the conclusion that doubt is a problem.
They conflate confidence with certainty.
Along the way, things worked out for them. They had a willingness to leap, some lucky breaks and a lot of hard work. So they seduce themselves with the black and white dichotomy of certainty. Because, after all, they were certain and look what happened. It all worked out.
Certainty is a form of hiding. It is a way of drowning out our fear, but it's also a surefire way to fail to see what's really happening around us.
If you're certain, you're probably not prepared for the unexpected, and sooner or later, you're going to be badly surprised.
People without doubt aren't looking hard enough.