I've often thought that truly ambitious projects need a certain amount of ignorance to succeed. People who can see all this detail tend to be more conservative

I've often thought that truly ambitious projects need a certain amount of ignorance to succeed. People who can see all this detail tend to be more conservative with their plans because those details give them pause, and limit the scale of what they attempt. The optimistic newcomer will bite off much more than they can chew, but sometimes they succeed. "If I knew how much work this would be, I never would have started" is sometimes felt at the end of successful projects.