That concept isn't really compelling to the masses until one focuses on the "knee" of this exponential curve -- the point where the perpetual doubling of technological growth skyrockets and negates the linear models of progress that people like economists have relied on for so long.

CNN: STORY HIGHLIGHTS

Police footage showed a man appear to drop to one knee by a car in Clifton Close, Aston, and point a gun at the helicopter, prosecutor Andrew Lockhart QC said.

BBC: Birmingham & Black Country

John's played without point guard Jamal Branch who sprained an MCL in his knee in the loss to Georgetown.

WSJ: St. John's beats Connecticut 71-65

The point to be made on the Clinton visit is that the knee-jerk impulse for negotiations above all inevitably brings more costs than its advocates foresee.

CENTERFORSECURITYPOLICY: Clinton's unwise trip to North Korea

"There is no timetable at this point, " said Stoudemire, who's had chronic knee problems, and developed considerable soreness after a span of four games in five nights.

WSJ: Bobby V, Back at Last

And with strikers Wayne Rooney (hamstring) and Dimitar Berbatov (knee) now also doubts for the match against Aston Villa, Ferguson's squad is stretched to near breaking point.

BBC: Manchester United call up teenage defender Oliver Gill