Good ideas spread slower than bad ideas because bad ideas are simpler. "It's complicated" loses to "they're evil" every single time.

@Daojoan the best ideas are often simple too though

@Daojoan "Explanations exist; they have existed for all time; there is always a well-known solution to every human problem—neat, plausible, and wrong. "

Atributed to H L Mencken 1920 “Prejudices: Second Series” third chapter.