 Why is Jerome in search of the museum in the futuristic civilization?
There is one fact no sane man can quarrel with ... But some men aren't sane; thus it isn't always so! You will, you know, so why quibble about it? It's a real wrench when a man meets himself for the first time. 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. You are completely outside of time and space, as best you can guess how things are. Then it comes to you slowly that you're actually traveling in time. "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. There may have been a time when you did invent the machine—the atomic motor first, then the time-machine. 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. That means you either carry a small time field with you, or you are catching a small increment of time from the main field. You suddenly realize that everything in the machine is wide open, yet you haven't seen any effects of air loss. Out there is neither time nor space, apparently. In spite of Einstein, you have always had the idea that time is an effect of gravity, and I sort of agree, still. He told me, just as I'm telling you, that it's an interstellar civilization." It gives out a coughing noise and the basement openings begin to click by us. There's no feeling of acceleration—some kind of false gravity they use in the future. Don't worry about getting lost; you never did, so you can't. Find the museum, grab the motor, and get out. A second later, you see me going by, mixed into a crowd that is loafing along toward a restaurant, or something like it, that is just opening. Some of them can be decoded to stationery shops, fountains, and the like. But there is only a single picture of a dull-looking metal sphere, with passengers moving up a ramp, and the office is closed.
 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.