That is an extremely important question. All the empirical studies have shown that doing nothing is going to cost more than doing something. We can have a carbon tax that might cut economic activity by 0.1% or 0.2% in the short term. However, since 2006, studies have shown that the costs of doing nothing could amount to 5% to 15% of GDP over the medium term.
To come back to what I said earlier, we can buy time, but time will catch up with us and cost us more. It's like doing preventive medicine versus treating someone to fix a medical problem. We can tell ourselves for a long time that we are not going to go to the doctor, but at some point, we are going to see the doctor and the doctor is going to tell us we should have come in a year ago.