e c In this case the discussion was inefficient because you failed to do even minimal due diligence and try to find the answer to what deletion discussion yourself which you could have trivially done avoiding a waste of both my time and yours After e c the answer is that this discussion is inefficient because of blind stubborness on your part you re wrong and yet incapable of backing off As for the A in AGW read global warming Global warming is the increase in the average temperature of Earth s near surface air and oceans since the mid 20th century and its projected continuation If you want it to mean something else you may be looking for climate change Perhaps the question should be what exactly are you hoping to achieve here You re certainly going to have to actually understand the subject rather better than you are demonstrating if you want to make anything better