If I were Professor Hawking's PR person or assistant, I would be demanding that they back up the quote. I can see Hawking saying something about the Columbian exchange, and the impossibility of so much contemporary cuisine without those explorations and cross-importations. But it's not the Big Mac, except as a not-very-clear example of adding tomatoes to a bunch of Old World foods like beef and wheat. It's pizza and chocolate milk and chili; it's that very British dish, chicken tikka masala.
(no subject)