 The Hume/Heimson case is a bit odd, since Heimson’s belief is a bit odd. But more mundane examples are ubiquitous. One occurs a bit later in Perry 1977: there is something doxastically in common to all of the (well-informed) residents of Kennebunkport—they’re all in a doxastic state that leads them to sincerely assert “I am in Kennebunkport”, and to engage in Kennebunkport-appropriate behavior. Similarly, there’s something doxastically in common to everyone disposed to sincerely assert, “that’s Gilmore Lake before me” (Perry 1979) or “my pants are on fire” (Kaplan 1989).