There are standards for doing life-cycle assessment of products that apply to all material, so we have the techniques and the mechanisms. A couple of the questions you've asked about wood products and cement and concrete are highlighting that there are areas that are still evolving in methodologies.
The Cement Association raised some important points: there are unresolved issues early in the life cycle for wood products that we're still sorting out the methods for, and there are unresolved issues for cement products at the end of the life cycle. Jamie was just mentioning that they do sequester. There's a difference between “store” and “sequester”—