The third group had to choose which features they wanted on their customized computers. They didn’t simply ponder options or implement others’ choices. They had to cast the die, and that turned out to be the most fatiguing task of all. When self-control was measured afterward by asking people to solve as many anagrams as they could, the people who had actually made decisions gave up sooner than the others. Crossing the Rubicon appeared to be tough mental work, whether it involved deciding the fate of an empire or the size of a computer drive.
Interesting that merely approving what someone else has already done the legwork for is more exhausting.
