Voice Interaction's Last Mile: An Architectural Perspective on OpenAI's Headphones

40 minutes, zero screen time. This data point is crucial—it means AI interaction is shifting from "looking" to "listening." As someone with a backend background, my first thought was: what's the latency budget for this scenario? Is the throughput of the voice stream sufficient? But the more fundamental question is: why headphones, not glasses, not phones, not rings?