Failure Fiction - Why to empower failure culture in science?

Let's have a journey to a scientific world where there is no failure, no mistakes, so there is no need for a failure culture at all. Science fiction shows us how it is done. Hari Sheldon, psychohistorian; he knows how to save civilization. He has a plan and knows it all. In Isaac Asimov's Foundation - Trilogy scientists can save the wisdom of the known world, beware the citizens of the galactic empire from loss of its knowledge and so from total disaster. It is tempting to reach a point of prediction where you can avoid disasters, where a failure becomes a mere fiction.