May I add something?
I'm not sure if I gave enough nuance, but in the opening statement I did speak to the options analysis the department has developed for GHG reductions. That is not only a design and technical tool, but it is a tool, from a cultural perspective, to change the way we think about looking at the design process.
We are looking at the design process not only from the perspective of achieving the construction of a building but also from the perspective of GHG reductions. We have four tiers of options with different costings through a life cycle costing methodology that is, then, put on the table for decision-makers to choose based on the GHG reductions and therefore, indirectly, the material selected.