Did you notice that prior art can be a piece of paper describing the invention? It doesn't have to run on *any* processor. It's the claims that have to match, not what it runs on. For example, when Red Hat was accused of patent infringement by IP Innovation, they rolled in a 1985 Amiga computer that a Groklaw reader still have running to demonstrate prior art, and they won. Otherwise, by his logic, Samsung couldn't infringe any of Apple's patents, in that Android and Linux don't run directly on iOS.
The foreman, in answering criticisms, says that the jury paid close attention to the jury instructions. But looking at this one, did they? I'm sure they meant to, and I'm also sure they did their best according to what they understood. But this was an error, and it's one I don't think the judge can ignore, if anyone brings it to her attention. Incidentally, just in case he said prior art and he meant obviousness, the jury instruction on that is No. 33.
Let's look at some details. The foreman says that the jury started out in a stalemate, because some on the jury were not clear how prior art can invalidate a patent. At that point, he thought it was going Samsung's way. So he went home and had his aha moment. He felt he could defend it if it was his patent. So he explained it all to the jury. And that turned the tide. But if he told them that interchangeability was a requirement for prior art, he goofed big time.