I spend a lot of time thinking through problems with pen and paper, and also highlighter and printer, and whiteboard. I've found this class of tools often lets

I spend a lot of time thinking through problems with pen and paper, and also highlighter and printer, and whiteboard. I've found this class of tools often lets me focus on a problem with less distraction. It's not always the right tool, and of course the code must be typed up sooner or later. I often work in environments where the development cycle time is terribly slow for one reason or another, which puts a premium on thinking through things ahead of time.