Mr. Mann is pissed that his celebrity status is being challenged.  He is no scientist.  A true scientist does not speak of "climate change deniers" thereby making a scientific issue into a personal issue.  Mr. Mann has made climate change his pathway to personal success.  A close reading of this commentary reveals absence of science.  The 2010 book by Perry, of course, could not reference the data from 2016 and there was a period preceding 2010 when temperatures had leveled off.  Mr. Mann does not talk science which always holds results in question.  Yes, true scientists look to disprove their own work thereby ensuring it is correct as much as possible.  Mr. Mann preaches truth as handed down by god.  Does he mention the actual uncertainties of which there are many?  The US contribution to world CO2 is a minor part of the whole, yet he proclaims that Trump and his team alone can send the world into disaster.  Mr. Mann is no scientist yet his profit comes from that identification.