Apple hasn't had a great time holding on to the original Siri team, and we don't just mean the founders -- there are precious few of those core members left. And today, we're learning that one of those last remaining pioneers may have walked out the door. The Information's sources claim that Darren Haas, a Siri co-founder and Apple's head of compute-focused cloud engineering, has left the company to join GE a few weeks after one of his fellow Siri alumni, Steve D'Aurora, reportedly did the same. The two are believed to be working on a similar cloud platform at their new employer.