Lots of stuff. We were in a space race! First we were going to put a city on the moon and then spread out to fill the planets. But somehow, for no reason I can find, they just stopped. And look at these broadcasts. If these are at all up to date, then none of what they’d always promised ever happened. No jet packs. No flying cars. It’s a good decade past the year 2000, according to their calendar, but where did the future go?” “We can make jet packs for them,” Kyal said, trying to calm him. “It’s sort of a primitive device, but I suppose we could fabricate a few, if you want.” “That’s not the point,” Danny said. “It’s not what we could make for them, it’s about what they didn’t become. It’s like the entire history of Earth after I left was one giant broken promise.