Given the mandate of my office, we are often asked to cost the cost of proposals rather than their benefits. It's very difficult to estimate the benefit of a carbon tax, and it's typically not something we do. We don't generally do cost-benefit analysis. That's the reason why we have not done it in the case of the carbon tax. In most cases, we don't do a cost-benefit analysis. It's something that's been asked often. For example, when we were costing a guaranteed basic income, there would be savings in terms of social services, but that was not something that we costed or estimated because we generally don't do cost-benefit analysis.
