4 ms·
Yes, though I think the last three feet refers to the vestibule connecting the two carriages, which a passenger in the non-toilet carriage must traverse.
by mannykannot 8y ago
Yes, though I think the last three feet refers to the vestibule connecting the two carriages, which a passenger in the non-toilet carriage must traverse.
- mikorym 8y agoThanks, that does make sense. So he means three extra feet of travelling that our equivalence relation with (-,+-) ~ (-+,-) ignores.