"Ada might also be justified in boasting that she was correct, at least thus far, in her more controversial contention; that no computer, no matter how powerful, would every truly be a 'thinking' machine. A century after she died, Alan Turing dubbed this ' Lady Lovelace's Objection' and tried to dismiss it by providing an operational definition of a thinking machine--that a person submitting questions could not distinguish the machine from a human--and predicting that a computer would pass this test within a few decades. But it's now been more than sixty years, and the machines that attempt to fool people on the test are at best engaging in lame conversation tricks rather than actual thinking. Certainly none has cleared Ada' s higher bar of being able to 'originate' any thoughts of its own." -Walter Isaacson, author of Innovators