Taken from an article found on avc.com a blog by Fred Wilson
"He explained that once your brain starts working on a problem, it doesn't stop. If you get your mind wrapped around a problem with a fair bit of time left to solve it, the brain will solve the problem subconsciously over time and one day you'll sit down to do some more work on it and the answer will be right in front of you.
I've taken that approach with every big problem I've faced ever since. I used this technique to get through high school, college, and business school. I've used this technique to develop a career in investing and technology. I've even used this technique to deal with our own parenting challenges."
I like this idea because it means you could possibly be doing several projects at once, even though its probably not good to do so. i have witness first hand processing and problem solving while your not consciously active in the problem. it likes the information needs time to sink in or absorb.