I believe him, although his argument is rather weak. It's true that it would be prohibitive to run speech recognition at all times, but what if Google would cho

I believe him, although his argument is rather weak. It's true that it would be prohibitive to run speech recognition at all times, but what if Google would choose to do so when detecting a particular pattern, like you are meeting a specific person? Even simpler, we could imagine it tries to detect speech for 5 seconds every 10 minutes; that way it could bypass a lot of the arguments listed here. We also know that the NSA can activate your microphone remotely, so the technical capability is definitely there and Google has the means to do it.