Today proved just how fickle, and even devastating, the Apple rumor mill can be. This is doubly true when the rumors come from someone with a reliable track record. Such was the case early this afternoon, when Mark Gurman (and Ian King) of Bloomberg reported that Apple will be moving away from Intel’s processors as soon as 2020. It touched off a firestorm of coverage and speculation, and also caused Intel’s stock to fall 6.4% by 3:30 PM Eastern today. Ouch.