If you could only pick one of the two for time control. Which would you go with? The ability to slow down time as much as you want, up to a crawl (can't stop it or go backwards because i have read too much about the catastrophic effects).
Or the ability to speed it up with almost no limit?
One rule though: your metabolism and aging stays in normal speed regardless of if you're slowing time or speeding it up.
Speed up time 3x for 1 hour, you age 1 hour but 3 hours have passed in real time.
Slow down time to .5 for 1 hour, still age 1 hour. a half hour would pass in 'real' time.)
What uses would you find for your choice?