Isn't this a reason to understand more about the climate though? How big cuts are needed, and how fast? What is the consequence of leaving those cuts an extra 10 years? What if we put our energy into cutting methane now and leave CO2 for later? Does black carbon matter in the long term? What amount of warming is acceptable?

These are the kind of questions we need answers to. Just saying 'we need to stop all emissions today' is not good enough. There is always a trade-off and we need to work out where this lies.