James Meigs

饰：Himself - Editor-in-Chief, Popular Mechanics

Timothy Brook

饰：Himself - University of British Columbia

Alberto Camarillo

饰：Himself - Stanford University

Eric Meyers

Eric Meyers

饰：Self - Narrator

Sam Sheridan

饰：Self - Author, A Fighter's Heart

穆罕默德·奥兹

Mehmet Oz

饰：Self - New York Presbyterian Hospital

亨利·路易斯·盖茨

Henry Louis Gates

饰：Self - Harvard University

Kara Cooney

饰：Self - University of California, Los Angeles

John Shea

John Shea

饰：Self - Stony Brook University

安东尼·霍洛维茨

Anthony Horowitz

饰：Self - Author, The Devil and His Boy

约翰·拉塞特

John Lasseter

饰：Self - Chief Creative Officer, Walt Disney & Pixar Animation Studios

Steven Johnson

饰：Self - Author, Where Good Ideas Come From

Jim Rasenberger

饰：Self - Author, America 1908

Richard Machowicz

饰：Self - Military Expert & Former Navy Seal

Mark Frauenfelder

Mark Frauenfelder

饰：Self - Editor-in-Chief, Make

布莱恩·威廉姆斯

Brian Williams

饰：Self - NBC Nightly News

H·W·布兰兹

H.W. Brands

饰：Self - University of Texas

Ali S. Khan

饰：Self - US Centers for Disease Control and Prevention

Dan McNichol

饰：Self - Author & Journalist

Beverly Gage

饰：Self - Yale University

拉尔斯·阿兰兹-汉森

Lars Arentz-Hansen

饰：William Parsons