Akton: You would have tried to change the future, which is against the law.
This is the first tree house story where the kids’ desitination might be in the present time, although there is still some time travel since the tree house always returns to the same time that it left, presumably so The Parents don’t worry. In any case. we’ve decided to mark this type of possibly-present-day story as having debatable time travel to distinguish this kind of destination from those in the past or future.
As with several of the Magic Tree House stories, the kids’ destination in this one might be in the present time.