It's possible that the program identified Bast as the most likely author because so much of the strategy memo appears to be cut and pasted from other Heartland documents. So I decided to take Bast up on his suggestion and rerun my stylometric analyses.

What makes The Hockey Stick and the Climate Wars an important addition is the thread of Mann’s evolution in thinking as he followed the simple logic of science where it led, something we want any graduate student to do, and as a result was increasingly forced to defend his work, himself, and ultimately the future of the planet. A harrowing ride through the politics of truth and denial.

A lot of fuss is being made about the provenance of the Heartland Institute's climate strategy memo. Heartland says it's a fake. I decided to test that.

Secret documents reveal the corporate and fossil-fuel-funded Heartland Institute's plan to feed kids propaganda in their science classes

Internal documents show organization's strategy, including a climate propaganda effort in K-12 schools by "providing curriculum that shows that the topic of climate change is controversial and uncertain - two key points that are effective at dissuading teachers from teaching science."