Other people's behaviour acts as a cue for what to do, buy, or believe.
More quotesThe crowd is rarely wise. It is merely useful when you have eleven seconds and 4,000 options. A bestseller badge gets a book picked up. A queue outside an unknown restaurant prevents the immediate suspicion that everybody inside has died. A review from a company shaped like yours helps unfamiliar software survive the first cull. None of this establishes quality. It earns attention, which is commercially valuable long before preference appears.
Marketers adore the biggest available number: one million customers, ten thousand reviews, billions served. Relevance can beat tonnage. “Used by 37 independent dentists” may do more for the 38th dentist than “trusted by businesses worldwide”, a phrase so broad it could include a man selling eels from a van. Good social proof answers the doubt currently blocking movement. Has anyone like me tried this? Did it work for the same job? What happened when something went wrong? Anonymous stars are weak witnesses. A specific account from a relevant peer can carry the case.
Fake counters and manufactured scarcity are commercial payday loans. They borrow trust quickly and leave the experience to repay it with savage interest. Popularity opens the door. Fit keeps the customer inside. Value makes them tell the next person.