When I say outcome-based, one of the great examples is New York City. We do a lot of stuff in New York City. They came out with a new regulation that's called the LL97. It's an outcome-based regulation. It's basically saying to the market that it needs to reduce emissions by a certain date; otherwise, it will be penalized.
I think once you do that, you really let the market figure it out. It's outcome-based, but you let the market figure out the solution. It drives everybody in the same direction. Instead of saying that it's maybe that solution or this other solution, it tells the market that this is a problem we're trying to solve and if the market doesn't solve it, it's going to cost them that much. People get creative and they solve it.