“Hey, time traveler. Do you live in a sucky future?”
“No, not really sucky.” “Ok then, if you go back to your time and send the machine back to me, I will put my entire fortune into a single bank account with your name on it, in any country and bank in the entire world you think is best. I will then take a few brief trips of my own and send the machine back to you. Deal?”
“Yes, future is the most sucky.” “Would you prefer to stay here, then, and be a god among men, while I take a joyride?”