[bowaggoner]

That's one big problem for sure. Another is when the information is costly to gather, and there is a Schelling point for people without the information. For example, we all get in the habit of saying "10 degrees" whenever anyone asks the temperature of any city.

Similar, there are cases like "What is the capital of the state of New York?" A Schelling-point answer might easily be New York City, even though the correct answer is Albany. There's research on this stuff in the "peer prediction" a.k.a. "information elicitation without verification" literature, e.g. Prelec, Seung, McCoy 2017: https://marketing.wharton.upenn.edu/wp-content/uploads/2017/...