达拉斯·坎贝尔

Dallas Campbell

饰：自己

大卫·巴蒂尔

David Baddiel

饰：自己

马库斯·杜·桑托伊

Marcus du Sautoy

饰：自己

邦妮·格里尔

Bonnie Greer

饰：自己

Robert Jastrow

饰：自己

Raymond Kurzweil

饰：自己

丹尼·华莱士

Danny Wallace

饰：自己

约翰·斯拉普内尔

John Shrapnel

饰：自己

Ian Deary

饰：Self - University of Edinburgh,(archive footage) (as Prof Ian Deary)

Edward Fredkin

饰：Self - Massachusetts Institute of Technology,(archive footage) (as Prof Edward Fredkin)

James Gould

饰：Self,(archive footage)

Chris Henshilwood

饰：Self,(archive footage)

Robert Plomin

饰：Self - Behavioural Geneticist

Steve Broder

饰：Self - California Cryobank,(archive footage)

Terrence Deacon

饰：Self - University of California, Berkeley,(archive footage) (as Prof Terrence Deacon)

Howard Gardner

Howard Gardner

饰：Self - Harvard Graduate School of Education,(archive footage) (as Prof Howard Gardner)

Vivian Hill

饰：Self - Institute of Education, University of London,(archive footage)