Hi ya’ll, it’s been a while... Say hi to your kinja neighbors every Thursday in the very crossed Whitenoise, Hackerspace, Groupthink, Powder Room, Odeck, Tay, Oppo, Backtalk, Clashtalk, CrossTalk, & Gawrker cross thread. What new thing have you learned recently?

ETA: Also, what are your most favorite explanations for difficult things?