How do you think? “I have a friend who thinks during yoga, and another who browses and compares mental photographs,” Joshua Rothman writes. “I know a scientist who plays interior Tetris, rearranging proteins in his dreams.” But our mental processes are even more mysterious than we realize. At the link in our bio, Rothman explores our different styles of thinking—and how different our minds really make us. Illustration by @miguelporlan.