“What is all the fuss about? The answer can be summed up with one word, productivity. “I think our estimate is a little over $4 trillion in global productivity per year by 2030,”said IBM CEO Arvind Krishna. It is the promise of designing a molecule or producing a car in half the time that gets manufacturers excited. “I don’t know a single CAC 40 company that isn’t deploying artificial intelligence,”said Alexis Combessie, founder of start-up Giskard, which offers testing and verification tools in the field.”