Rumors that Apple CEO Steven P. Jobs is in deteriorating health have been abroad at least since last summer, when journalists and tech-market analysts began fretting aloud over his gaunt appearance. For the many investors who care about Apple's stock, this is no idle worry. The mystique-laden Jobs, after all, is credited as a driving force behind the company's success, and he has already undergone treatment for cancer, in 2004.
The rumors were revived when Apple announced that Phil Schiller, th
