Tuesday: Time Machine

You find a time machine, of sorts. It lets you observe either the past, or the future, but not both. Which do you choose, and why?

Bonus question: If it let you visit one or the other, which would you choose?

Millie knew if given the opportunity of having a time machine at her disposal, she'd want to see the future. Just so that she'd know what was in store for her and if anything needed to be changed.