Having recently written an article on this blog about making decisions by instinct rather than conscious thought, I was interested to see in today's papers that recent research has shown much the same thing. 

The conscious or top-level function of the brain, when active, vetoes our initial subconscious decision — even when it is correct – leaving us unaware or distrustful of our instincts and at an immediate disadvantage.

Falling back on our inbuilt, involuntary subconscious processes for certain tasks is actually more effective than using our higher-level cognitive functions.