We all work to be right. To get the right answers, perfect the right campaign, the develop a flawless design.
There are three problems with having the right answer. (Or being totally focused on getting to the right answer.)
1. When you reach the right answer, you stop. The process of discovery stops. This limits finding other correct answers - and perhaps finding better ones.
2. It creates a very linear process. Lets go from here to the answer, as directly as possible. Creativity requires a more relaxed state, a meandering and allowing for some dead-ends.
3. Perfection is hard. It takes a great deal of time and resources. And is often impossible. Yes, things can always be improved, but at some point, you have to release the software, mount the show or publish the book.