If we're only the cause of 50% of the warming that implies curbing our behavior only has half the impact that it would if we caused 100% of the warming. No, it

If we're only the cause of 50% of the warming that implies curbing our behavior only has half the impact that it would if we caused 100% of the warming. No, it does not imply that, not unless we know of a linear relationship between "warming" and "impact." From what I understand, the relationship is far from linear, i.e. our changes can have disproportionate impact.