Imagine all of the waiting rooms and typing classes it's seen in its half-century on earth. IBM this week is celebrating the 50th birthday of its best-selling Selectric line of office typewriters. First introduced in 1961, the line featured a rotating typeball that increased typing speed and could be changed for italics, symbols, and different fonts and languages. The typewriter also eschewed the traditional moving carriage, with the typeball and ribbon taking on the motion, reducing the unit's overall size and leaving more space on office desks for family photos and troll dolls. These innovations helped make the line nearly ubiquitous in o
