AGW 'skeptics' - where is the flaw in AGW science?

Your main problem is your need to focus of CO2 feedback. You look for any variations to blame on CO2. Preconcieved notions have a way of building facts to support them, especially if other facts are ignored. There have always been climate variations whether you talk about time intervals in decades or millenia. You cannot explain any of those in terms of CO2 feedback over 200 years ago since there wasn't any or certainly not from humans. There is nothing special about recent increases. Just because the exact reasons for these increases and decreases are not known, it does not provide a vacuum, where any convenient explanation can be inserted to explain it. The truth of the matter is we don't know. Some of us simply know we don't know.