So if the phone handles the easy stuff, who builds the model in the first place? That's the question my opponent keeps strolling past. Sure, local inference is real, and offline email drafting is a genuinely nice win. But the commuter example is a tier-zero task. The second that same commute asks for a contract reviewed against case law, they're reaching for servers. And here's the part that stings: every model on your phone was trained, tuned, updated, and pushed from a datacenter. The phone is a terminal, not an origin. That's delegation, not a kill.