Bubble Economy  Meanwhile, test coaches at Kaplan are not
particularly worried about refining their methods based on a
robotic reader. Asked whether she thinks test takers will be
induced by automated scoring to write stiff, structured essays,
one GMAT teacher shrugs. "They do that already," she quips.
Signal and Noise  Clause Célèbre: "Does anybody know Arnold
Diaz?" Jay Sulzberger, the evening's makeshift Marx, asks the
crowd. He's looking for the ABC consumer watchdog to film the
revolt he's hatching up here on the ninth floor of the IBM
building. A strange place to organize a counterculture
rebellion, certainly. But not when the enemy is Microsoft.  As
"corresponding secretary" for New York's feisty "free computing
group" LXNY (lxny.org), the prodigiously bearded Sulzberger is
dedicated to promoting the use of free software like Linux, one
of the few alternatives to Microsoft's Windows operating system.
(IBM has its own, called OS/2.) It's a cause that has now turned
overtly political.Sulzberger is helpi