Is That a Consequence of the Uncertainty in Solar Forcing?

The IPCC has pretty much dismissed the role of the sun in the last 150 years. This is trying to get all that model dry, let alone making credible predictions into the future. And then if you once you get into the sun, it's even crazier. So there are so many uncertainties out there that affect certainly the projections of what might happen in the 21st century but also our interpretation of what's been going on with the climate for the last 100 years.