I stopped reading the article after the first piece of nonsense: > To make it happen, Facebook would need to record everything your phone hears while it's on.

I stopped reading the article after the first piece of nonsense: > To make it happen, Facebook would need to record everything your phone hears while it's on. This is functionally equivalent to an always-on phone call from you to Facebook. Your average voice-over-internet call takes something like 24kbps one way, which amounts to about 3 kBs of data per second. Assume you've got your phone on half the day, that's about 130 MBs per day, per user. No, this is complete nonsense. They could easily record the audio locally (perhaps even sporadically rather than constantly -- you don't need constant audio data), do some local speech recognition when the phone is plugged in, and send over the resulting text in short bursts along with all the other data they send over. There's no need for raw audio to be sent over the wire. It's not like they need perfect accuracy.