The intellect has little to do on the road to discovery. There comes a leap in consciousness, call it intuition or what you will, and the solution comes to you and you don't know how or why.
Albert Einstein, German physicist
The hard work. You have to collect and sort the relevant information, analyze the problem as thoroughly as you can, and explore possible solutions.
This is the depth mind phase. Mental work – analyzing, synthesizing and valuing – continues on the problem in your subconscious mind. The parts of the problem separate and new combinations occur. These may involve other ingredients stored away ...