Actually I meant that you can sleep on the problem by simply doing nothing and absorbing information without any throughput of it. According to science you will then slowly rise to the top like a stone on a field, which can be observed as a career strategy in several large organizations as folks who do nothing move from position to position in reorganizations and somehow manage to avoid being hit by them.
What Matt is implying is that you can also sleep with the problem which is something entirely different.