Ah, classic sci-fi, is there no situation where you can’t figure out a clumsy way to shoehorn in an exposition dump? So many world-building ideas shoved into dialogue and description that stand out for their awkward placement. As can be seen in this little satire:
. . . “Do you think we’ll be flying on a propeller plane? Or one of the newer jets?” asked Ann.
“I’m sure it will be a jet,” said Roger. “Propeller planes are almost entirely out of date, after all. On the other hand, rocket engines are still experimental. It’s said that when they’re in general use, trips like this will take an hour at most. This one will take up to four hours.”
After a short wait, they were ushered onto the plane with the other passengers. The plane was an enormous steel cylinder at least a hundred meters long, with sleek backswept wings on which four jet engines were mounted. They glanced into the front cabin and saw the two pilots, consulting a bank of equipment needed the fly the plane. Roger was glad that he did not need to fly the plane himself; it was a difficult profession which required years of training . . .
“There are more people going to San Francisco today than I would have expected,” he remarked.
“Some of them may in fact be going elsewhere,” she answered. “As you know, it’s expensive to provide airplane links between all possible locations. We employ a hub system, and people from smaller cities travel first to the hub, and then to their final destination. Fortunately, you found us a flight that takes us straight to San Francisco.”