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hytrin half life Nonetheless, AT&T saw the laser as a means of growing the Ma Bell monopoly, creating “millions of new communications paths will be available??for unique services of the future, like the Picturephone, which may one day, when linked to a computer, do our arithmetic or give us the latest stock quotations.” The Picturephone never quite took over the world. But AT&T wasn’t completely off-base. Other phones would eventually do math, feed us the latest stock values, and, yes, handle video calls. And, as Ma Bell also predicted, lasers became a standard way of cutting chips, performing surgery, and imaging the brain.