Thus the unlearning process is a little bit more complicated, the blocking

compound stimulus could explain that, because the wolves have associate their feeling of

hungriness when they see a sheep, when a stimulus that has already been learned

interferes with associating a new stimulus, it's an innate behaviour to stay away from

sheep, therefore every generation needs to learn that sheep are associated with nausea.

With the time it can get to the point that they will get back to their behaviours. Explain this in simple terms