The political problem of course is our political strategies for adaptation should be based on that sensitivity number.

But in the case of severe negative consequences and some uncertainty about the number, should we not proceed on the basis of a somewhat worse case number? Else we are taking the position: "We can't know for sure until it is too late, so we shouldn't do anything because we might be doing the wrong thing."

"It is not necessary to have hope in order to persevere."