Why a legendary Wall Street permabear is suddenly sounding more upbeat

ANGELA WEISS / AFP via Getty ImagesJohn Hussman, an enduringly bearish voice on Wall Street, is adjusting his investment calculus.Hussman said the market's best days increasingly come amid "dangerous" conditions.Still, the longtime market bear remains cautious with valuations near all-time highs.It's a rare day when John Hussman, the legendary permabear who called the 2000 and 2008 crashes, expresses a degree of optimism about stocks.One of those days came this week, however, when Hussman publis