Now, this way of working isn't easy, but as I said, it's more and more the way many of us have to work, so we have to understand it. And I would argue that it's especially needed for work that's complex and unpredictable and for solving big problems. Paul Polman, the Unilever CEO, put this really well when he said, "The issues we face today are so big and so challenging, it becomes quite clear we can't do it alone, and so there is a certain ______in knowing you have to invite people in." Issues like food or water ______cannot be done by individuals, even by single companies, even by single sectors.