An excerpt from the forthcoming biography Steve Jobs by Walter Isaacson has finally revealed the full story behind the iconic "uniform" Jobs wore, according to Gawker, revealing it to be a choice not only for time-saving purposes (as has often been offered by Jobs himself as the explanation) but as a way to convey a signature style -- which grew out of a desire to have Apple employees wear a uniform in the early days of the company, Isaacson says.