How do those changes compare to the start of a glacial period? Or the end of a glacial period? Because if you believe the sun is responsible for that, then you don't have much of a leg to stand on.Closer to 12 billion years before the next step
The discussion was regarding TSI, not Milankovitch cycles and actual changes in TSI, though relatively large over the last few years, are microscopic in terms of the energy required to produce the changes observed over the last century.