Thinking how to have fun with the device, Jeff went into programming it so that random changes occur all the time. He made everything random, so changes could be big or small, happening to a few people at a time, or a group of people, or even everyone at the same time. The change in reality might or might not occur, and the transformed person and anyone else who saw it might or might not notice the change.
Before confirming Jeff put the exception that he would be the only one who would always be aware of the changes, and he also put a lock so that for a week neither he nor anyone else (for the case of anyone to finding it and try to change) can make it stop. As soon as he confirmed, all Chronivac commands were locked and a 168-hour countdown timer appeared on the screen.
Jeff couldn't wait for the first change he would witness, and this one happens...