I asked ChatGPT to create an illustration for the book “Cities in Flight” by James Blish. ChatGPT responded with the illustration, and the text:

Here’s the illustration for “Cities in Flight” by James Blish, capturing a futuristic city lifting off from Earth’s surface, enclosed in a transparent, dome-like force field, transitioning from the planet to space.

That’s an accurate description of the premise of the world Blish created: A force field called a “spindizzy” enables whole cities to lift off the Earth and fly around as spaceships.