My working hypothesis is that the conscious and subconscious mind cannot access the same part of the brain at the same time (sort of like bus conflicts). So, co

My working hypothesis is that the conscious and subconscious mind cannot access the same part of the brain at the same time (sort of like bus conflicts). So, counterintuitively, to let your subconscious mind churn on a problem, you have to actively focus elsewhere. This, at least, seems to be how it works for me.