In the film Tom in the future story is shown recalling his past. If the future was all fiction why would Tom need to recall his past?
2) In the present story Dr. Thomas actions appear to validate the future story. Thomas using a pen marks his ring finger with a ring tattoo. In the future story, Tom is shown to have this ring tattoo along with other ring tattoos all over his body that represent the many years that have passed since the death of his wife. In the present story Thomas declares that he will find a cure for death and becomes obsessed with unraveling the secret of live over death. In the future story we see how this obsession has grown and changed Thomas into the Tom figure. 3) The compound with the extract from the Guatemalan tree actually does work on the monkeys in the present story. This compound reverses aging and even cures cancer. It would be logical to assume that this is the same tree travelling with tom in the future, or at least a tree of the same species. 4) In the present story Moses Morales account from Guatemala of his father that turned into a tree from a seed from a Guatemalan tree that Izz
