Thinking about Asimov's robot novels...

[Retired Engineer Bob]

11. The Naked Sun

Is the name of the novel. Features Elijah Baley (human investigator from Earth), and R. Daneel Olivaw (humanoid robot, Baley’s former assistant).

Baley is sent to Solaria to solve a murder. His impressive qualities as an investigator overcomes his lowly status as an Earthman. Earth is grossly overpopulated, folks live underground in massive multilevel cities. Processed yeast is a staple of their diet, due to population. People have a taboo/aversion to being outdoors. The Caves of Steel describes Bailey’s Earth.

Solaria is a planet that is the complete opposite of Earth. Population limited to 20,000. Everyone has his/her separate estate. Physical contact with other humans is taboo/aversion. Socialization is via holographic “Zoom” meetings only.

The Naked Sun is book three of the four part Robot Series. I read them as a kid, and recently read again. Nothing wrong with a literary salty snack or chocolate once in a while.