 Why is Jerome in search of the museum in the futuristic civilization?
Yes, it'll be pretty obvious it must be a time machine. You'll be puzzling over what I'll tell you, and you'll be getting used to the idea that you are the man who makes atomic power practical. Jerome Boell, just a plain engineer, the man who put atomic power in every home. "Maybe it's no dimension—or it might be the fifth; if you're going to skip over the so-called fourth without traveling along it, you'd need a fifth. I figured out once that such a universe would need some seven or eight time and space dimensions. Maybe there is no machine, and it's just easier for us to imagine it. Out there is neither time nor space, apparently.
 That's where the generator is held.
 That's where the guard who has information on the generator is located.  That's where the generator is held.  That's where the information for the real inventor is located.  That's where the guard who has information on the real inventory of the generator is located.