the sign told them to. you can't ignore the sign, or else you'll be the odd one out since most people heed the sign. being socially ostracized is the worst thing. fall in line. do as others do. do as they tell you to do. it's comfy being part of the pack. it's soul crushing to be excluded from the pack. no, it really is, because they told it is, and because most people heed the telling, therefore you know it must be true.  accept the truth.
Kekistani