The tool is perhaps less important than the practice. I keep a journal with entries for every time I am blocked by an issue I cannot solve in my head. The proce

The tool is perhaps less important than the practice. I keep a journal with entries for every time I am blocked by an issue I cannot solve in my head. The process of writing it down, doing a pro/con list, working out the solution in writing, etc, helps unblock it. It's not so much about posterity as it is about unblocking issues and moving forward in the most sensible way.