You're faced with choosing one of three new machines. You are the only person in the world allowed to have the choice. Which would you choose?
A machine that will allow you to travel a short distance into the future. You can select from 1 minute up to 7 days into the future per use. You cannot go back once you've arrived. After 100 uses the device self implodes.
A machine that will make you invisible for an hour at a time. You are limited to one use per month for 10 years.
A machine that will allow you to see events in the future while remaining in your own time frame. The limitation on this machine is that you can only see 30 minutes into the future and you only experience the future for 1 minute. You can use the machine up to once per day until you've used it 1000 times.
Tell us your choice and why. What exactly would you do with it? How would you use it to benefit yourself personally? How would you use it to benefit others?