The interactive build order for FC always has 1 extra vil

So i tried the interactive build order by cicero, and on every FC build order, i always seem to have 1 extra villager after moving villagers from sheep to farm. Even in the written build orders, if you sum the number of villagers after moving from sheep to farms, you'll get 1 less (like in FC->boom, you have 26 while a moment earlier you had 27).

Is this supposed to be a houses/walls vil, or is it like an extra vil on a resource im missing?

Another thing, in the FC build order it always tells you to send a vil from boar to lure the other boar, while other build orders recommend sending a new vil unless your boar is about to run out (around less then 150 food left), in which case you send a collecting vil to lure boar, and send the new vil to collect from the current boar.
Which one is usually better?