The skills prehistoric peoples depended on seem exotic to today’s college students, who Schindler says arrive on campus each year with less and less of the sort of practical experience that he emphasizes in his class. He tells of the time he asked some students to crack eggs and separate the yolks from the whites. He returned to the kitchen 10 minutes later to find that not a single egg had been cracked. “I asked them if the problem was that nobody had ever told them how to separate the yolk from the whites, and received blank stares in return,” he recalled. “After a minute of silence, one of them said, ‘I’ve never cracked an egg.’ I was floored—how do you even make it to 19 without cracking an egg?