In 1950 Alan Turing proposed a test to determine whether a machine (such as a computer) could overcome the limitations foreseen by Descartes in his Discourse on the Method:
For we can certainly conceive of a machine so constructed that it utters words… But it is not conceivable that such a machine should produce different arrangements of words so as to give an appropriately meaningful answer to whatever is said in its presence, as the dullest of men can do.
Turing called it the Imitation Game; we now call it the Turing Test. Two people—or perhaps one is a machine—sit at teletype terminals and have a conversation. Neither can see the other, but they are allowed to ask each other anything.
In those days it would have been a teletype terminal, not a video monitor, so you wouldn’t have been able to send or request a photograph. You have to determine whether the responses are from a human or a machine based entirely on the text.
Six decades later we actually encounter something similar in online social networking. But I’m not here to discuss “bots” that send automated status updates, advertising, or non sequeters to Twitter or Facebook. I want to talk about humans who, when they log on to their social networking accounts, forget that they are human or social.