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LOPRESTI: Hinkle Fieldhouse innovative when it was built—and today

The arched steel trusses enabled the roof to cover a couple of acres without the need for beams, providing the vast and wide open spaces inside that would give the gazillion visitors to come in future years the sensation they had wandered into something that was part-gymnasium, part-national park.

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JONES: ChaCha was a great idea that ran out of money

I still believe my decade-old vision is sturdy and world-changing, because even the best computers and algorithms are still able to answer only about 60 percent of the random questions asked by on-the-go people, doing real life.

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