Impossible to quantify our impact on world: Cook on Apple's 50th anniversary

Apple CEO Tim Cook, in a memo to employees marking the company's 50th anniversary, said, "It's impossible to fully quantify the...impact this company and its people have had on the world". "50 years ago, there was a single...prototype in a garage. Today, there are 2.5 billion active Apple devices," he added. Apple was founded on April 1, 1976.