Of course, anybody who actually IMPLEMENTS something without running it through a thorough examination of conscious thought is an idiot, but the absolute best approach is when the conscious and subconscious work in tandem. In my case, the subconscious is my "engine of innovation", and my conscious is the "trust but verify" engine.
Years ago, I would take the day off and go skiing by my self. On several occasions while riding the lift, in the quiet woodland solitude, a solution to a major problem would come to mind.
Now days, I design things to be made from silver. The design comes at night, to be put to paper and cleaned up the next day