I read through that conversation and wondered why you were accused of word salad because to me your responses were perfectly intelligible. Then again, you were asked two yes/no questions and, true to your dictum of doubting even that you doubt, you didn't answer neither in a clear yes/no manner (I took that "challenge" myself and found out that I can actually answer them as yes or no). And on a slightly different note -- if you have problem with infinite causal regress, try to negate existence as such (or cause it from absolute non-existence).