[Jordan Olsommer]

Paradigm shifts, mostly (actually as far as I know, Kuhn coined that term, so the next time you get a headache from the sheer number of times your boss includes it in a powerpoint presentation, you can thank Kuhn).

I guess a better way to summarize it would be if you remember that Gandhi quote "first they ignore you, then they laugh at you, then they fight you, then you win", that's pretty much it, except regarding scientific instead of social movements.