Sorry BigDog @ 13.20, but I am going to be an academic pedant. We can’t let business book authors pinch a philosopher’s ideas and claim them as their own. The “hedgehog and the fox” idea was a book by Isiah Berlin, but the concept goes back to ancient Greece.
BTW – Ryanair? Never again! Easyjet? Yes, on a route I need and at a price that is reasonable.