• When a group of people starring at the sky, without thinking you peer upward too,

  • When a person starts clapping in a concert, everyone joins too.

  • Another rough term for it is “Herd Instinct” - means individuals feel they are behaving correctly when they act the same as other people.

  • It is absurd.

  • It is the evil behind the bubble and the stock market panic and exists everywhere.

  • Why we act like this?

  • Some use cases where social proof is valuable:

    • As a hungry Foreigner, you can follow the local’s behaviour to find the good restaurant.
    • Advertising industry - deciding among cars with no obvious advantages and disadvantages.

So be warned whenever a company claims its product is better because it is “the most popular”. How is a product better simply because it sell the most units?