Most teams aren't teams at all but merely collections of individual relationships with the boss. Each individual vying with the others for power, prestige and position.
TRUST: I know that you will not -- deliberately or accidentally, consciously or unconsciously -- take unfair advantage of me. I can put my situation at the moment, my status and self-esteem in this group, our relationship, my job, my career, even my life, in your hands with complete confidence.