I think it's both. With many of the new technologies, it's not straightforward to use them to retrofit older production facilities. We have two general types of technologies we're working on for our portfolio. One is retrofittable, meaning it might be new technology, but you can use it in existing facilities. The reality is that with some of the more striking technologies, it's not that straightforward to retrofit.
We work on both in that idea of a portfolio approach to make sure we're going to be successful. We're not putting all our eggs in one basket, or counting on one, or two, or three technologies. That's why we have 252 projects.