"All groups and organizations should function as teams in which everyone makes decisions and shares responsibilities and duties. Giving one person central authority and responsibility for a project or task is not an effective way to get work done."

The statement argues the positive effect of a leader in all groups and all organizations. I disagree with the author because the need of a leader is mandatory in most cases.

Firstly, I would like to discuss why almost every group or organization have a central person selected. The mean reason for this approach is that it has been proven that people in group are more effective with a leader. Communities aren't obligated and they still use this concept.

However, groups and organizations have to work as a team to be the most productive, a leader must be indicated to make decisions. For example, if one part of a team supports one opinion and the other part supports another opinion, there must be someone who makes the choice.

I sum, I can say the author is right concerning teamwork and the sharing of responsibilities. However, the most effective way, as proven for ages, is to select a capable leader.