What makes a conclusion reached by a unanimous vote the best option?

When people are receptive to ideas and recommendations and don't immediately disregard them, teamwork emerges in business sectors. There is a far better possibility of discovering the optimum solution when a group of people can generate ideas and assess them in a logical and detached manner. To avoid personality conflicts during these meetings, each team member must be determined to be positive and constructive in their criticism of any perceived drawbacks.

It is democratic and seems to be fair to all. Another reason is that when the project fails, majority of the people that voted for the ideas will be held responsible. It is also a good pointer that there is oneness or team up where everyone's ideas matters.