In a third experiment, the researchers split doubling back into two components: deleting past work and having to complete the entire task from the beginning again. In the word-generation tasks, framing the switch as “starting over” reduced the likelihood of switching from 75% to just 25%. But they still chose to stay the course when switching was described as discarding previous work or restarting the task. When switching tasks was framed as undoing work, participants felt that their earlier effort had been wasted. The aversion was strongest when both components of doubling back were present — undoing past work and starting over with a full task.