Steven Swartz, a co-author of the report by consultancy firm McKinsey and Co., said the key is for governments to be flexible and encourage innovative solutions. There’s a cocktail of solutions to specific problems brewing, and nobody knows for sure which ones will work and which ones will be the most important or useful. “My sense is that the folks who create the most robust environment for experimentation as you go through this kind of genesis that we’re going through [are] ultimately going to be the ones that figure this out,” he said.