Introduction - If you have any usage issues, please Google them yourself
Dark time can be attributed to the own secret disposal spare time, both can be used to thinking of the time, which is a direct result of the time did not produce. For example, read a book and remember something of the book is just a memory, and does not involve reasoning, in-depth understanding of a thing only by inference to see other people do not see the place, a person walking, grocery shopping, wash your face, wash your hands, take a bus , shopping, traveling, eating, sleeping, these all the time can be a " dark time" , you can take full advantage of these time to think, let your understanding from the scripted level, discovery and innovation.