Mysticism in Tail of the Blue Bird

At the end of Tail of the Blue Bird, we are in a way left without a concrete answer to the mystery of the murder. It is said by the characters in the village that Kofi Atta died because of the curse, and consequently aging backwards. This may just be the cold-hearted cynic in me, but I have a hard time accepting this mystical solution to the investigation. Instead, I view Kayo's acceptance as more of a symbolic shift from his scientific approach to a more intuition based method. To me this is similar to the moment in mysterious detective stories in which the investigator considers that there may indeed be a non-logical solution. While most stories go on to the detective reasoning out the true, rational cause, Tail of the Blue Bird stops there. For stories such as Lord of the Rings or Harry Potter, the suspension of disbelief in necessary in order to understand the plot. I believe that belief can only be suspended, however, in the creation of the perimeters of the story. For example, in Harry Potter belief is suspended in that we believe that within the story, there is a wizarding world.  Within that world, however, there is still parameters that cannot be broken. If Voldemort suddenly turned good, I would have a hard time suspending my disbelief. That is how I feel about the ending to The Tail of the Blue Bird. I feel that within the parameters of that world, the conclusion that many in the class drew exists too far out of the realm of possibility. Consequently, I view Kayo's acceptance as more of a symbolic departure from reason, instead of the actual cause of death.