University of California at Berkeley Professor of Physics Dr. Richard Muller asks if the climate data are clear and incontrovertible? Answer: no, because they were very much tinkered with. You can’t say that the climate operated one way before 1960 and another way after 1960. Data are data.
What should Mann, et. al. have done?
“Science is and always has been a work in progress,” said a scientist talking about a prediction he made about when a glacier would be gone. “As scientists, we publish the data based on our best understanding of that data at the time. That is the way science works.”
In other words, the data speak for themselves.