It's wise to watch others' reactions when you are uncertain.
Callix's coffee machine broke down, and he wants to buy a certain new model on Amazon.
Callix wants to buy a coffee machine.
Callix asks her experienced friends about their opinion on the best coffee machine.
Callix buys the coffee machine without looking at reviews.
Callix follows their advice buying a cheaper model that lasts for several years.
The coffee machine Callix bought has cheap parts that break after one use.