Researchers in psychology and neuroscience regularly tell us that episodic memory is less like a video recorder than like a story processor. Share a memory, and your brain actively constructs something, piecing it together in ways that are responsive to other beliefs, assumptions and values you may have. When you overhear conversations on a bus, train, subway or street, you’re very often listening to people recount previous conversations. (‘‘So she says … . And I’m like … . And she says … .’’) Psychologists would tell us that we may be listening to a new memory being created. It’s not that the stories we trot out are tall tales, but they may be on tiptoes.