Final answer:
The group described in the question is likely suffering from groupthink, where members align their opinions with what they believe is the group consensus, resulting in suboptimal decisions. To avoid groupthink, seeking outside opinions and considering different viewpoints is important.
Step-by-step explanation:
The group described in the question is most likely suffering from groupthink. Groupthink is the modification of the opinions of members of a group to align with what they believe is the group consensus. In this scenario, the group members are agreeing and saying things like 'Great minds think alike!' without critically evaluating their decisions, leading to suboptimal outcomes.
To avoid groupthink, the group should seek outside opinions, vote in private, have the leader withhold position statements until all members have voiced their views, conduct research on all viewpoints, weigh the costs and benefits of all options, and develop a contingency plan.