Carl Clement (fallecido en 2011)
Douglas Engelbart (fallecido en 2013)
Steve Jobs (fallecido en 2011)
Matt Kahn (fallecido en 2013)
Bill Moggridge (fallecido en 2012)
He realizado la mayoría de las entrevistas personalmente, pero en algunos casos he tenido que recurrir al teléfono, a Skype o al correo electrónico. Se enumeran aquí en el orden aproximado en el cual sus vinculaciones institucionales aparecen representadas en el libro:
Allen Inhelder (Hewlett-Packard)
Charles House (Hewlett-Packard)
John Leslie (Ampex)
Jay McKnight (Ampex)
Larry Miller IBM, (Ampex)
Peter Hammar (Ampex)
Roger Wilder (Ampex)
Darrell Staley (Ampex, IDSA)
Douglas Tinney (Ampex)
Chas Grossman (Ampex, Atari)
Jay Wilson (Ampex, GVO)
Donald Moore (IBM)
Edward Lucey (IBM)
Budd Steinhilber (Tepper Steinhilber)
Frank Guyre (Lockheed)
Dan de Bra (Lockheed, Stanford)
Bill English (SRI, Xerox PARC)
Philip Green (SRI International)
Charles Irby (SRI, Xerox PARC)
Jack Kelley (SRI/Herman Miller)
Donald Nielson (SRI International)
Jeanette Blomberg (Xerox PARC)
Stuart Card (Xerox PARC, Stanford)
John Ellenby (Xerox PARC, GRiD Systems)
Austin Henderson (Xerox PARC)
David Liddle (Xerox SDD, Interval Research)
Tim Mott (Xerox PARC)
Severo Ornstein (Xerox PARC)
Jeff Rulifson (Xerox)
Abbey Silverstone (Xerox SDD)
Robert Taylor (Xerox PARC)
Larry Tesler (Xerox PARC, Apple, Amazon)
Arnold Wasserman (Xerox, I.D Two)
Lucy Suchman (Xerox PARC)
Dave Rossetti (Convergent Technology)
Karen Toland (Convergent Technology)
Nolan Bushnell (Atari)
Warren Robinett (Atari)
Robert Stein (Atari)
Kristina Hooper Woolsey (Atari Research Labs, Apple)
Brenda Laurel (Atari Research Labs, Interval Research, CCA)
Michael Naimark (Atari Research Labs, Interval Research)
Eric Hulteen (Atari Research Labs, Interval Research)
Peter Lowe (Ferris-Lowe, Interform, Palo Alto Center for Design)
James Ferris (Ferris-Lowe, Apple)
Marnie Jones (Stanford, Palo Alto Center for Design, IDSA)
Peter Mueller (Interform)
John Gard (Steinhilber-Deutsch-Gard, Inova, GVO, IDSA)
Steve Albert (GVO)
Mike Wise (GVO)
Robert Hall (GVO)
Michael Barry (GVO)
Gary Waymire (GVO)
Philip Bourgeois (Studio Red)
Regis McKenna (Regis McKenna)
Rob Gemmell (Apple)
Tom Hughes (Apple)
Jony Ive (Apple, entrevistado en 1998)
Susan Kare (Apple)
Jerry Manock (Apple)
Clement Mok (Apple)
Terry Oyama (Apple)
Tom Suiter (Apple)
Bill Dresselhaus (Apple, Stanford)
Hugh Dubberly (Apple, Dubberly Design Office)
S. Joy Mountford (Apple, Interval Research)
Donald Norman (Apple)
Aaron Marcus (AM+A)
Abbe Don (Apple, IDEO)
Michael Gough (Adobe Design Center)
Gary Guthart (Intuitive Surgical)
Sal Brogna (Intuitive Surgical)
Stacey Chang (Intuitive Surgical, IDEO)
Ricardo Salinas (Intuitive Surgical) James Adams (Stanford University)
David Beach (Stanford University)
Bill Burnett (D2M, Apple, Stanford University)
Larry Leifer (Stanford University)
Robert McKim (Stanford University)
Bernard Roth (Stanford University)
Sheri Sheppard (Stanford University)
Terry Winograd (Stanford University)
Del Coates (San José State University)
Kathleen Cohen (San José State University)
Brian Kimura (San José State University)
John McCluskey (San José State University)
Robert Milnes (San José State University)
Pete Ronzani (San José State University)
Ralf Schubert (San José State University)
Leslie Speer (California College of the Arts, San José State University)
Leslie Becker (California College of the Arts)
Sue Ciriclio (California College of the Arts)
David Meckel (California College of the Arts)
Michael Vanderbyl (California College of the Arts, Vanderbyl Design)
Colin Burns (Interval Research Corporation, IDEO)
Gilliam Crampton-Smith (Interval Research Corporation)
Sally Rosenthal (Interval Research Corporation)
Doug Solomon (Interval Research Corporation, IDEO)
Ellen Tauber Siminoff (Inteval Research Corporation)
Rob Tow (Interval Research Corporation)
William Verplank (Xerox, Interval Research Corporation, Stanford)
Meg Withgott (Interval Research Corporation)
David Kelley (Hovey-Kelley, David Kelley Design, IDEO, Stanford)
Mike Nuttall (ID Two, Matrix Design, IDEO)
Dean Hovey (Hovey-Kelley Design)
Tim Brown (ID Two, IDEO)
Dennis Boyle (IDEO)
Rickson Sun (IDEO)
Jim Yurchenco (IDEO)
Peter