“Certitude” or the “attitude of certainty”, I think, is one of the best and worst features of a person.

Certainty can be defined as either: (Wikipedia)

1. perfect knowledge that has total security from error, or

2. the mental state of being without doubt

Instant Thinking
I deal for when we are driving a car and need to make hundreds of instant decisions per minute.

Long Term Thinking
Not so good for long term thinking when working in groups of two or more.