Word of mouth is the most trusted form of marketing. That’s what makes social media so impactful. Both your friends and influencers on social networks convince you to buy stuff.
But a room of anonymous people can also impact your purchase behavior.
— Stanford Business (@StanfordBiz) February 7, 2015
People yawn when strangers do. People are also more likely to check their phones if others are staring at the screens too.
Copying is desultory behavior, whether it comes from a friend or a fellow passenger.