The PM is assuredly not a one person show in this era of huge, complex, costly government that began in the 1930s.

So yes, that rarest of abilities - the ability to identify, inspire, integrate within a team, support and get the best out of senior executive talent - is critical to national leadership today.

But if the leader is to lead rather than being a token leading in the way a ship's figurehead is said to be leading the ship other executive abilities and talents are also required.   Otherwise the "leader" is really a sham and a fraud on the electorate.

In addition to interpersonal skills, a leader needs to be highly intelligent, capable of articulating to the people and to his team a vision and values that inspire them, able to set priorities, milestones and accountability for their achievement, and able to radiate confidence and courage in tough times.

So degrees are much less important than previous executive experience as a governor, minister, general, or private CEO.