“Can you read people’s thoughts just by looking at them?”.

“Mustard now comes in dozens of varieties. Why has ketchup stayed the same?”.

“When you meet someone for the first time, or walk into a house you are thinking of buying, or read the first few sentences of a book, your mind takes about two seconds to jump to a series of conclusions.
Well, Blink is a book about those two seconds.”.
(Malcom Gladwell)

Gladwell dot com: “Malcolm Gladwell, blink, tipping point and New Yorker articles.”.