What is it about unfairness? Whether it's not being invited to a friend's wedding or getting penalized for bad luck or an honest mistake, unfairness often makes us so upset that we can't think straight. And it's not just a personal issue -- it's also bad for business, says Marco Alverà. He explains how his company works to create a culture of fairness -- and how tapping into our innate sense of what's right and wrong makes for happier employees and better results.