Dale Carnegie’s How to Win Friends and Influence People is the classic on getting along well with others.But is there any real science behind it, or is it just advice that “sounds good”? In the past I’ve broken down old sayings and career advice, let’s see if Carnegie holds up to scrutiny.Actively showing interest in other people is powerful. Merely listening to what they have to say and ask them to tell you more makes you more liked and people more receptive to your requests.It is engaged, enthusiastic, curious and has supportive nonverbal action. Ask questions. Be excited. Ask for details. Smile. Touch. Laugh.Smiling does make you more attractive.