that Anthropogenic emissions of GHGs (primarily CO2) are (1) increasing the concentration of CO2 in the atmosphere, and (2) that such increase in CO2 concentration in the atmosphere will produce Catastrophic Global Warming within the current century. I propose that this question is one of the most difficult for you to engage with as it strikes at the "unquestionable assumption" that "CAGW is true" in your mind. At the moment you are highly unwilling or literally incapable of admitting that your "unquestionable assumption" that "CAGW is true" could be false. Your mind -- with so much invested in the idea of CAGW truthiness simply refuses to go there. The purpose of propaganda and indoctrination is to insert "unquestionable assumptions" into the mind of the target subjects so that they are incapable of questioning the inserted belief system. This is not my position. I would agree that human emissions of GHGs (primarily CO2) are contributing to increasing atmospheric gas concentrations, however the extent to which they contribute, there residence time, and climate sensitivity to these emissions are open questions. 2)There are no gases that cause a greenhouse effect. This is also not my position, I accept that H2O is the primary GHG in the atmosphere and that other GHGs may contribute to the greenhouse effect. Now -- since I have dealt with your misrepresentation of my position, could you please answer the question. Or are you incapable of forming clear statements in the English language that would describe the specific, measurable