Use Bad Ideas to Spark Good Ones

Daniel Pink posted a brief summary of a longer piece, by Scott Adams, the creator of Dilbert. The idea is a new one to me, and apparently used a lot by writers in TV who have to come up with new plot-lines on a regular basis. They sit down with their group of co-writers and give their bad ideas, in hopes that going off the bad ideas will spark good or even great ideas from the others in the group.