The undeciders

More decision-makers bring less efficiency

It’s the other Parkinson’s: the progressive degeneration of a committee’s ability to make decisions as the committee adds more members.

English historian Cyril Northcote Parkinson observed in the 1950s that decision making is severely impaired in committees of more than 20 people. Now physicists have shown that the size of a country’s executive cabinet appears to be linked to that country’s overall efficiency, and they have found a possible mathematical explanation.