Quote from John_Wensink:
The summary also shows that scientist have now discovered that between 950 and 1250 AD, before the Industrial Revolution, parts of the world were as warm for decades at a time as they are now.
Quote from Ricter:
I think you're trying to be friends with everybody.
Quote from piezoe:
I am confident of your firm belief that man has caused almost all the warming over the last fifty years. Perhaps someday you'll be proven correct.
Quote from futurecurrents:
Along with virtually the entire world's science community and anyone with at least half a brain and who can put two and two together. I guess you're not in that category. Too bad.

"My personal position, at the moment, is that the arguments for GW over the last 50 years are compelling"Quote from piezoe:
I can you assure of this much with absolute certainty, and that is that there is at minimum one scientist who can put two and two together that is neither certain that man's activity has caused "almost all the warming over the past 50 years," nor even thinks it is likely.
You, yourself, quoted the hedged language from the IPCC, viz, "...is very likely..." rather than "... is..." . That suggests there may be more than one.
My personal position, at the moment, is that the arguments for GW over the last 50 years are compelling, while those for AGW are much less so.