the castle has several features that were advanced for its time, including a primitive intercom system and a two chimney system operated by a lever that would direct the smoke depending on what direction the  wind was blowing to take the smoke out of the valley. composition
the story was inspired by a pet rabbit potter had as a child, which she named peter piper. the transition to the ordered states is driven by the condensation energy which is approximately  where  is the magnitude of the energy gap opened by the transition. as a consequence a recommendation has been made for de-notification. 