A more helpful discussion on climate change would focus on how much will adaption cost, how likely is it to succeed, and are there better uses for our time or money?
Cost vs. Benefits
It is possible for a policy's cost to be greater than its benefit and if that's the case, we shouldn't do it.
Remedy and Ramifications
We need to be clear about the cost of trade-offs to the possible remedies.
Cost of Action
The cost of action includes the cost of not using those resources elsewhere, either on combating climate change in different ways, or solving even other problems, such as reducing diseases like malaria or vastly expanding access to clean drinking water.