Others have referred to Mike's role in international trade. He saw it as not that complicated as far as economics was concerned. It was about people doing what they were good at and sharing it with other countries. Mike was very firmly of the view that poorer people could eat more if it was cheaper, and the way to make it cheaper was to trade it and not to have the tariff and other barriers stopping that happening. Frankly, with a few exceptions here and one more notable exception internationally, that is now the received wisdom around the world, and it certainly wasn't the case 25 or 30 years ago. 