You want the real windows into someone's soul? Look at their Reddit subscriptions. It's all there: their passions, their hobbies, their ideological leanings, their love of terrible haircuts and sublime anonymized cringe. And if they're anything like me, those subscriptions also tell the tale of a life spent diving down rabbit holes. Origami. Board games. Trail running. Pens. Cycling. Mechanical keyboards. Scrabble. (I know. God, I know. There are jokes to be made here.