Your opinion is not his. Joe — and no amount of bullying or catcalling makes him a ‘denier.’ What he is is a believer that man has not the ability to make such a determination. Since he is not convinced by Appeal to Authority there is the matter of giving him opinions and calling them facts. But the facts you allege are not facts available to him. Therefore they do not exist. Until and unless proof is available to convince more people than just ‘climate scientists’ we have the ludicrous situation of ‘scientists’ who can demonstrate nothing being cited as authorities. Yet science rejects authority. Therefore climate prognostication need not be accepted as valid. ; no physical evidence being available.