DOOMSDAY SCENARIOS: WHY THEY REPLICATE AND WHAT THEY MEAN

Barry Vacker

October 18, 2014

Invited talk and book signing at the Philadelphia Association of Critical Thinking.

Barry presented an overview of his book, The End of the World — Again (2012). Click to view or download a PDF of the Powerpoint. PPT 

• Note: this powerpoint has many images and may take 15-30 seconds to download.