Explain SMBC — the wiki for Saturday Morning Breakfast Cereal

This comic is a multi-layered wordplay joke involving etymology and physics.

A man asks: "I don't get it. Why do liberal arts people have a tall statue of a famous physicist, carved from a single rock?"

A woman responds: "Then you are not welcome inside."

The caption below reads: "Anyone who does not appreciate the one-stone Einstein monolith is not allowed in Etymology Club."

The joke packs several puns and references into one:

1. "Einstein" -- The name "Einstein" literally means "one stone" in German (ein = one, Stein = stone). So a monolith (from Greek "monos" = single, "lithos" = stone) of Einstein is literally a "one-stone" statue made from "one stone" -- the name and the object are etymologically synonymous.

2. "Monolith" -- A monolith is by definition a structure carved from a single piece of stone, which maps perfectly onto the literal meaning of "Einstein."

3. The "Etymology Club" gatekeeping -- The woman's dismissive response ("then you are not welcome inside") is because the man fails to appreciate the etymological pun. If you don't get that "Einstein" means "one stone" and "monolith" means "single stone," you don't belong in Etymology Club.

4. The "liberal arts" framing adds another layer: it seems strange for liberal arts people to have a statue of a physicist, but the statue isn't there to honor physics -- it's there because the name "Einstein" is an etymological delight.

This is a deeply nerdy joke that rewards knowledge of German, Greek roots, and a love of wordplay -- exactly the kind of thing SMBC readers tend to enjoy.