For most of history, squirrels spent nearly all of their time collecting nuts and storing them away in “secure” locations. Day in, day out, all around the world, hard-working squirrels carefully accrued nuts and put them into caches—burying and unburying them over and over to simply remember where they were located. Many nuts were lost because they were forgotten—and 25% of all nuts buried were stolen by other squirrels. For a long time, it seemed like the average, law-abiding squirrel could never get ahead. This was because they were practicing traditional nut-saving techniques like the squirrels before them, and the rest of squirrel society as a whole. But then something happened.