The Spanish cardinals and grandees, who were later adorned with oversized pairs in their portraits, were unwittingly helping to launch a very 21st-century idea: Technological self-enhancement is cool.

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It's a cool idea -- you can sit in a seat that moves and reacts to the game as force feedback does with a joystick.

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While Project Glass sounds super-cool on the surface, the idea is also kind of creepy.

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But the backlash helped crystallize the idea that Facebook no longer is seen as the always-cool company that everybody implicitly trusts.

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But most people will likely see a 3-D printer, think it's cool, then have no idea what to do next and move on.

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Kozmo is a cool idea, and may have even looked like a good company back when everyone was riding the dot-com high, but it just doesn't hold up in the real world.

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