- Linda Elder
- James J. O'Donnell
- Mike Guertin
- Aubrey de Grey
- George Dyson
- Paul J. Steinhardt
- Dan Sperber
- Scott Atran
- Portland Cement Association
- Andrei D. Linde
- Haim Harari
- Anton Zeilinger
- Carlo Rovelli
- Thomas Metzinger
- Peter S. Fosl
- William Cobbett
- Robert P. Moses
- Joel Gold
- Jennifer Jacquet
- Hugo Mercier