I got the same conclusion (AGW is junk) but from the other direction. It seems to me the values used to gauge any climate models predictive capacity are themselves derived from stacked assumptions. Values like the average temperature of the mesosphere at nighttime is derived from very high level math that hasn’t been properly tested in the lab. So we have variables derived from stacked assumptions run through a model to see how well they predict values that are themselves derived from stacked assumptions.