In February 2013, Yahoo set off a mighty global stink when it sent a memo telling staff to forget about working from home, Starbucks, wherever and return to its corporate embrace. The intention of recently installed CEO Marissa Mayer was to increase collaboration and productivity by getting everybody in the same space. There is some logic to this, except for one thing. As Andrea Hak wrote for us in her masterful post mortem of the whole debacle last year: “With this change Yahoo was trying to attack a symptom rather than the root of the problem. Pitting employees against each other in a stack ranking style system actually discourages collaboration. The experiences of companies that ditched this system have shown that employees are more likely to try and undermine the competition than work together.” So who in the tech sector would possibly make the same mistake again? The answer is IBM.