[Girchuck]

Not just understand others' feelings. Being able to feel what others feel. Being able to spot a lie. Being able to lie without being caught. Being able to believe what you are telling others and therefore being persuasive.
Being able to precipitate conflict when strong and avoid conflict when weak. Being able to make your friends feel good. Being able to make your business partners think that they are getting a good bargain. Being on time for people who value being on time. Being creative for people who love to play with new ideas. Being able to communicate exactly what you want in such a way that others will want it too.