 Yes. I guess if it didn't work, they wouldn't be able to sell it, and they want to make money, so they'll find a way. But there are so many encouraging things like that, that these companies want to provide greener products. For example, I'm on the board of the U.S. Green Building Council locally, and there's such an interest in green building now because they know that selling those kind of buildings is attractive because people want to live in healthy environments. What is a green building?