His greatest triumph was to understand that the mysterious Cape Bojador, past which Europeans had been unwilling to sail because of the dangers (up to and including the end of the world) that lay beyond was intruth no barrier except in the mind.
When that happens, American consumers and policy-makers alike will need to bear inmind the truth that outed in the Fall of 2008: oil prices are the driving force behind food costs and ethanol helps keep oil prices down.
But intruth there is always a little bit of fear at the back of my mind about making some fundamental editorial mistake precisely because our audience invest such a huge amount of confidence in our ability to get things right.