Like human beings, each group is unique and emerges as an unfolding of complex processes. Each group approaches and resolves these complex issues in unique ways. Members who have developed withholding skills are particularly adept at fouling up the system, for if the group can't know its members it has no information upon which to create an edifice for human accomplishment.
Most groups find a way of growing.
With time and as members get a bit more secure, the magic of small groups and teams is that trust may grow. Where they do, relationships take on a life of their own, people can come to feel better about themselves, can find both a sense of community and challenge, and creative things can happen. The first three minutes to an hour are the most important moments in the life of a team. Often, and usually quite unconsciously basic patterns get set from people's first anxieties and fears. In human groups, the most important concern at the first stage of group life is that of acceptance.