How to Find Us: Go into this Del Taco. I will bring a Rubik's Cube. The presence of a Rubik's Cube will be strong Bayesian evidence of the presence of a Less Wrong meetup.

Parking is completely free. There is a sign that claims there is a 45-minute time limit, but it is a lie.

Discussion: Expert at vs. expert on is a fairly important distinction. It's also a really simple one, which makes it conceptual low-hanging fruit. It's not totally without nuance; for example the terminology implies either total mastery or encyclopedic knowledge, but it applies just as well at any level of competence.

Recommended Reading:

• Expert At Versus Expert On. I know of no other writing that is explicitly on this topic. Robin Hanson emphasizes the signaling aspect (of course he does), but I do not.
• It is well-known that you learn to play baseball by playing baseball, not by reading essays about baseball. However, it is not usually made explicit that the former makes you an expert at baseball, and the latter makes you an expert on baseball.
• Another nuance: Being an expert at something helps you become an expert on it; the vice versa may be true also. For example, you are probably a better linguist if you speak many languages.

NB: No prior knowledge of or exposure to Less Wrong is necessary; this will be generally accessible. Also, we may or may not play a card game.