Thank you, I'm sure we'll all manage to not get confused.
People patrol the wall so we do get warning if any of them do manage to get through. Thankfully most of the ones that got in last time were herbivores so it wasn't too dangerous but there were some velociraptors and it was because of those that Grant and I decided to go and round up any stray animals we could find, we didn't want them ending up as dinner for any predators.