Sorry to post this again. But the properties that govern the Pit are real. It is just the speed they work that are not. Just like there are microwave emitters, just they are nothing at all how they worked in Batman Begins, there are hallucinogens, just not how they work in Batman Begins and The Dark Knight, using something as abstract as fear. And just like their are burn victims, but none that can survive what Harvey did, let alone walk around for a day, without infection or septic shock. If you must have everything rationalized, you must accept, almost everything can be rationalized.