Why do ideas need incubation?
Incubation is the time when the mind works behind the scenes. A lot of your best work is actually done when you are not consciously doing it! Ideas seem to sort themselves out. Perspective develops. You can suddenly see why something was a bad idea, or a good one, and you spot the gaps that need filling.
Why is incubation the second phase in the process?
Until you have done your preparation, as explained previously, you won’t have anything to incubate. It needs to continue until you’ve had at least some inspiration. But inspiration based on the sound basis of knowledge gained in preparation and allowed time for ideas to incubate. The other phases will work much better if you’ve let the first ones take place in the right order.
How can you forget about your project to allow incubation?
I know it is difficult but it is best to leave the project alone and work on another for a while. I’ve always got several books in my head and at least some partly on paper, so I can switch easily. It helps. Don’t try to force it. This may take only a day or two or it may take weeks. It depends on your makeup and on the problem or project in question. Anyway, it will be worth taking the time the process needs if you are to find a creative solution.