Being again 15 could be fun but it could only be fun if it was the year that you were 15. So you move the other knob backwards til it was the year that you were 15. Your surrounding changes, back to your room in your old house when you were 15 and you notice on the calender that it said the year was 1999. It actually worked, you werent just 15 but back to 1999. Then when you look in the mirror you realized that you werent 15 but 9. You couldnt understand it, you told the watch to go to a year in the past not make you younger as well. But then it hit you, probably the watch makes your age gets subtracted when you travel to past, so when you were made yourself 15 in the present, the watch acted like that was your current real age. So you then decided to fix it by...