Never thought about this so “scientifically,” but consider HD or Blueray. If you’ve seen a movie over and over on standard resolution, watch it again in Hi Def. You pick up so much extra stuff. It’s obvious that the main scenery and characters of the movie are in higher resolution, but if you think about it, it’s pretty incredible how your brain seems to pick up things that it never noticed before.

Slightly off topic, but you might like “eggcorns”, which I just heard of.

In linguistics, an eggcorn is an idiosyncratic substitution of a word or phrase for a word or words that sound similar or identical in the speaker’s dialect. Eggcorns often involve replacing an unfamiliar, archaic, or obscure word with a more common or modern word (“baited breath” for “bated breath”).

See also: The Eggcorn Database