Intellectual curiosity is stifled when we refuse to accept all possibilities of unproven fact. Theory and faith are almost interchangeable words. While facts and data may be real, it is 100% foolhardy for a scientist to “guarantee” that a change in human behavior, less CO2, will alter the course of a cycle that existed for millions of years without human involvement. So in essence, it is merely “faith” based upon data, and scientific hypothesis is not scientific fact. It’s why we have the story of Chicken Little.