One cannot help but cower at the feet of Ekkehard Wallat—not least because the older gentleman appears almost life-size in a projection that fills the entirety of a gallery wall; the room is furnished with low, modern plastic stools. Wallat is a teacher accustomed to translating complex ideas into simple formulas. Here, in a presentation more graceful and direct than that of any politician or late-night talk-show host, he summarizes the evolutionary theory of Otto Heinrich Schindewolf, comparing the curvatures of the skulls of adult and child Homo sapiens with those of their ancestors since