On Tuesday, the Supreme Court will hear arguments in a case that could make same-sex marriages legal across America. The pace at which we’ve changed our mind on this subject seems amazing. But such mood swings are anything but unusual. Bloomberg shares a series of charts that track the way momentum can build, and ultimately move an issue forward in a historical blink of an eye. If past is prologue, the legalization of recreational marijuana will be the next chart to spike.

+ “If the Supreme Court does hand down a pro-equality opinion this summer, Wolfson will have pulled off a triumph akin to Babe Ruth’s called shot.” Slate on how Evan Wolfson transformed American society.