As a data scientist with minor in mathematics and oceanography you learn that statistical study is how we refine our understanding and improve our models predictive powers.
The models (that we use to predict) are constantly improved by getting a handle on what was wrong with the model in the past via statistical analysis.
Too much hubris in climate science, especially once politics gets involved. It is a field in its infancy. We simply don't have the data yet to accurately model the future with much confidence. Even the data sets differ, because there is no consensus on the post processing/adjustment.
