Banks, real estate investment trusts, brokerages and mortgage companies have endured valuation drops that defy explanation.

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"There are just things in this game, no matter how you try to explain them, they defy explanation, " Ryan said, shrugging away Wisconsin's long run against Indiana.

NPR: Wisconsin Beats Indiana 68-56 In B10 Tournament

Nor do they exhibit behavioural patterns that defy normal rational explanation.

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