The eyes have it

You can't sneak a peek, because of all the face we're most set up to spot the eyes. The importance of sunglasses in certain situations is thus beyond measure. Nobody knows what I see and nobody knows what I'm thinking.

I sit in public and watch what people show of themselves, amazed that any of us leave the house. Going naked would be only marginally more revealing.

Related paper: The eyes have it! Reflexive orienting is triggered by nonpredictive gaze.