[lucianbr]

Push the work closer to the edge, and multiply it by quite a lot. Generate each image many times. Why would we want this? Seems like the opposite of caching in a sense.

[sroussey]

If you are reading a web page on mars and bandwidth is more precious than processing power, then <img prompt=“…”> might make sense.

Not so much for us on earth however.

[roywiggins]

This sort of thing (but applied to video) is a plot point in A Fire Upon The Deep. Vinge's term for the result is an "evocation."

[bobbylarrybobby]

All compression is, in a sense, the opposite of caching. You have to do more work to get the data, but you save space.