It's not uncommon for executives of smaller companies to jump ship within a few years of the business selling to a larger firm, whether it's out of entrepreneurial restlessness or unhappiness with the corporate status quo. We don't know which of the two (if any) is a factor with Siri co-founder Adam Cheyer, but tipsters for AllThingsD and Bloomberg still say that he left Apple in June to "pursue other projects." The reported departure follows that of Dag Kittlaus, who quit Apple a year earlier, and should leave the Siri team without the brunt of its early leadership two years after
