[itstriz]

The other part of this that I find helpful is that using paper is faster for many things, like small UI sketches, than using a PC. I also find that writing things down makes me think about the problem, whereas I can type up notes without paying attention to what I'm doing.

[rg81]

Yeah, that's a great point. The guys at 37signals also recommend using a fat-tipped pen or marker to prevent you from trying to get too detailed.

[psweber]

Using ink forces the ideas out, too. No erasing and fiddling with things.