In proposing the imitation game as a stand-in for another definition of thought or intelligence, Turing does more than deliver a clever logical flourish that helps him creatively answer a very old question about what makes someone (or something) capable of thought. In fact, he really skirts the question of intelligence entirely, replacing it with the outcomes of thought--in this case, the ability to perform "being human" as convincingly and interestingly as a real human. To be intelligent is to act like a human rather than to have a mind that operates like one. Or, even better, intelligence--whatever it is, the thing that goes on inside a human or a machine--is less interesting and productive a topic of conversation than the effects of such a process, the experience it creates in observers and interlocutors.

This is a kind of pretense most readily found on stage and on screen. An actor's craft is best described in terms of its effect, the way he or she portrays a part, elicits emotion

APPROPRIATELY ENOUGH, a century after his birth in 1911, Marshall McLuhan has found a second life on the Internet. YouTube and other sites are a rich repository of McLuhan interviews, revealing that the late media sage still has the power to provoke and infuriate. Connoisseurs of Canadian television should track down a 1968 episode of a CBC program called The Summer Way, a highbrow cultural and political show that once featured a half-hour debate about technology between McLuhan and the novelist Norman Mailer.

Both freewheeling public intellectuals with a penchant for making wild statements, Mailer and McLuhan were well matched mentally, yet they displayed an appropriate stylistic contrast. Earthy, squat, and pugnacious, Mailer possessed all the hot qualities McLuhan attributed to print culture. 

Because we perceive print and electronic media differently. Because Marshall McLuhan was right about some things.

In case you don't recall one of the more influential thinkers of the late 20th century: McLuhan was an academic media theorist who ended up being called a "high priest of popular culture." He was big enough to be a standing joke on Laugh-In ("Marshall McLuhan, what are you doin'?") to appear in a cameo in Annie Hall, to get interviewed in Playboy. One of the fundamental things McLuhan said was that new media change us and change the world. We see that principle in every kind of technology. When films started to talk, we started to talk in their phrases and cadences. When musical notation was invented, it took music into new dimensions of complexity and length. When computers started to link up on the Internet … You get the idea.

McLuhan declared that the two epochal cultural developments of the last millennium were, first, the invention of movable type in the 15th centur