http://www.newscientist.com/article.ns? ... news_rss20
There are times when science turns conventional wisdom on it's head, and one has to (reluctantly) accept that, but it's rather satisfying when the obvious is confirmed like this. Everyday systems are all big decisions. They may not be risky, but they require high commitment and a clear, firm, quality decision to succeed -- so sleep here too before you commit.Complex decisions are best left to your unconscious mind to work out, according to a new study, and over-thinking a problem could lead to expensive mistakes.
The research suggests the conscious mind should be trusted only with simple decisions, such as selecting a brand of oven glove. Sleeping on a big decision, such as buying a car or house, is more likely to produce a result people remain happy with than consciously weighing up the pros and cons of the problem, the researchers say.
Thinking hard about a complex decision that rests on multiple factors appears to bamboozle the conscious mind so that people only consider a subset of information, which they weight inappropriately, resulting in an unsatisfactory choice. In contrast, the unconscious mind appears able to ponder over all the information and produce a decision that most people remain satisfied with