You shouldn't be emotionless.
Sam is a judge of an acting competition and is sitting at his judge chair facing the participants.
Sam wants to grade the performers live.
Sam emotionally congratulates the winners of the competition with a big smile.
Sam gives his grades to the performers without expressing any emotion.
The winners of the competition are very happy they won and love Sam's smile.
The winners of the competition don't feel good because they got no emotion from Sam.