The false consensus effect

The mistake made by those advocating this position is their certitude that this perspective is self-evident. It's not. These advocates remind me of an apocryphal quote attributed to film critic Pauline Kael after the 1972 presidential election: "How could Nixon have won? I don't know one person who voted for him." Now, Kael never actually said this. But that erroneous quote survives as the best shorthand example for why smart people tend to be wrong as often as their not-so-smart peers—they work from the flawed premise that their worldview is standard.

— Chuck Klosterman

As footnoted, the actual quote reads:

‘I live in a rather special world. I only know one person who voted for Nixon. Where they are I don’t know. They’re outside my ken. But sometimes when I’m in a theater I can feel them.'

In some ways, it's even more damning, because it is aristocratically judgmental, rather than innocently ignorant.