The practical consequence of my opponent's position is that a house fire, a flood, or an intruder at 3 a.m. goes unnoticed until someone physically stumbles on it. A smart smoke alarm can wake you, call you, or alert a neighbor. The failure-mode concern is real, but it argues for locking down networks and choosing devices with local alerts, not for abandoning early warning. A deadbolt fails safe, sure, but it also fails silent and dumb. I'll take a small, managed risk of a hack over guaranteed blindness to the emergencies that actually kill people.