Consistency, a non-didactic intellectual environment, and free speech go a long way. I'm only speculating that "non-didactic" is key. But let me put it to the

Consistency, a non-didactic intellectual environment, and free speech go a long way. I'm only speculating that "non-didactic" is key. But let me put it to the test: Does anybody have an example of a person who swooped into a FLOSS mailing list and posted a long didactic screed that ended up qualitatively changing that FLOSS project for the better?