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TED talks are well-known, and rightly so. I’ve seen a few, and almost always been impressed, moved, amazed – at human ingenuity, intelligence, creativity. But even with the bar this high, Pranav Mistry’s presentation on his “SixthSense” technology takes the biscuit. Time and again, the audience erupts in spontaneous applause, and gave him a standing ovation at the end of it. What he is making computers do is mind-boggling, and you see him doing it right before your eyes: playing a computer game on the floor of a subway train – the floor of the train is the computer “screen”; projecting his computer screen onto a piece of paper, the wall of the room, any flat surface.

I’m too old to be starry-eyed about the utopian possibilities of this technology (somebody somewhere is no doubt already dreaming up ways of using this technology to commit violence or instill terror or enslave fellow humans), but I have to admit, I’m impressed.

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