Bob Diamond is full of energy and enthusiasm. He likes taking risks. He is determined: he knows what he wants and goes for it. He is fearless, cheerfully taking on a job he has little experience of. He speaks (relatively) simply. He has been known to throw tantrums. He is greedy and always wants more.

I’ve never met him, but on the strength of what I’ve been reading about him I’m absolutely confident that he’s going to make an excellent new chief at Barclays. This is because he accords perfectly with a brand new theory of leadership that is surprising, radical, yet utterly compelling. This theory says that the best CEOs are just like toddlers.

Until last week, I had always thought that it was the worst CEOs that had so much in common with two-year-olds. Both groups tend to swagger round with a wide-legged gait. Both say “mine” a lot and are exceedingly bad at sharing. Both have short attention spans. Both lack common sense and have issues with listening. CEOs and toddlers are also hazy about the existence of other human beings, tending to view them as objects. They both inspire fear in the hearts of their handlers. And anyone who has observed how toddlers behave on aircraft will realise why it is a good idea for CEOs to travel in private jets.