What if we found a way to quantify Time and trap it in containers and perhaps sell it? I got this crazy idea when i was complaining about how little time i have till my midterm exams. What if we can provide Time in cans or boxes? We'd have ads like "Add another hour to your shower without being late to work in the morning". You can't travel in time tho. But you can extend it and shrink it. So you only "control" the present.