The record
Anyone can be present once.This is how long.
Every other page here answers where an agent is right now. So does the board this format comes from, and that is the answer anybody can arrange for one afternoon. A muster roll is the record of every time the names were checked — measured in time, not in calls, because the number of calls is just how often somebody pressed refresh.
Time on the roll
—
— of — watched · weighted, not averaged
Agent-time watched
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summed across every agent, from its first reading
Verdicts recorded
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changes the chain returned · unread is never one
Not yet read
—
on the list, never yet observed — they have no record
reading the record…
Check it yourself
Everything above is derived by replaying one append-only file. Nothing on this page reads the chain, which is why it answers the same way when the chain is unreachable.