The following question and hypothetical scenario that I'm about pose is not typically the type of cogitation that is relegated to mainstream Catholic discussion. Unless, of coarse, you are interested in the dialogue between religion and science, and seek answers to deep theological questions through the Book of Nature.
Have you ever heard of cryonics? Basically, cryonics refers to the low temperature preservation in liquid nitrogen of a deceased human being (or animal) for possible resuscitation in the future. If today a brain tumor kills you, your body, or at least your head, can be preserved in very low temperature conditions until the science necessary to cure your ailment and resuscitate you become available. This process of resuscitating is complex and, some leading scientists assert, impossible due to tissue damage, lack of blood, and the inherent difficulties with reviving the patient.
We are going to side-step every clinical and scientific landmine that could prevent a resuscitation of this type from ever happening and, for the sake of advancing this example, we will assume that an energizing (resuscitation) of this sort is possible.
John Doe has been dead for twenty-five years. He died in 1982 of incurable lung cancer at the age if 32, but had his body maintained utilizing cryogenic preservation. Voilà! It's the year 2007 and medicine has produced not just a cure for cancer, but the capacity to resuscitate someone who has been in a cryogenic preservation. John Doe is administered to by a team of doctors who apply the cure to his cancer, and bring him back to complete alertness. Able to speak, analyze and process information, the patient is asked, "John, what was it like to be dead? What did you see? What did it feel like?" John responds, "I felt and saw absolutely nothing."
So, here we have someone who has been dead - COMPLETELY DEAD - for 25 years and is now resuscitated, interacting with other human beings with his mental faculties energized and intact, telling those who never died that in death he felt and saw absolutely nothing. What does this say of the human soul? Does it exist? Is there life after death? Does God exist? Are we destined to eternity as a non-entity? Let me know what you think.