We wish to clarify an account of the 2014 Turing Test experiment we conducted at the Royal Society London, U.K., as outlined by Moshe Y. Vardi in his Editor's Letter "would Turing Have Passed the Turing Test?" (Sept. 2014). Vardi was referring to a New Yorker blog by Gary Marcus, rather than to our experiment directly. But Marcus had no first-hand experience with our 2014 experiment nor has he seen any of our Turing Test conversations.
Our experiment involved 30 human judges, 30 hidden humans, and five machines—Cleverbot, Elbot, Eugene Goostman, JFred, and Ultra Hal; for background and details see http://turingtestsin2014.blogspot.co.uk/2014/06/eugene-goostman-machine-convinced-3333.html. We used social media to recruit judges and a variety of hidden humans, including males, females, adults, teenagers, experts in computer science and robotics, and non-experts, including journalists, lecturers, students, and interested members of the public.