So, which one is the original? How could you be sure you are not the clone?
Well, assuming such a scenario was possible that an exact duplicate was created...there should be no way to tell the difference. However, that would require the clone be placed beside you while it was not yet... for lack of a better word... 'on'. Once the clone begins its existence as an entity separate from you, aware of itself and its surroundings, the mere fact that it does not occupy the same space as you changes its perspective as well as what information it stores in memory. Therefore, in order to have this work, the clone would have to not only be a perfect copy of you... but also be placed in the bed and THEN turned on. If either of you had a memory of getting into bed with yourself, then it would be obvious who was the clone. I guess that whole point is obvious. If these conditions were met though, then yeah, there's no way to tell the difference that I can see immediately.
would that be concidered reviving? Why not?
No I wouldn't consider that reviving. I suppose it depends on your definition of reviving, but to me, reviving implies continuing the life of the original such that the original would retain the memories of whatever caused them to encounter a situation where they would need to be revived in the first place. Otherwise... it's not revival... but rather creation.
Isn't this happening all the time, just in smaller scale? Ie. cell regeneration?
Fuzzy area for me. I'll let someone who knows more about it answer :P
Do you believe in souls?
Souls, just due to their very definition, imply the supernatural. For me, the brain seems completely capable of storing whatever information it needs to for retrieval at any time throughout the life of the organism. It's only after that organism dies that the supernatural soul even becomes necessary in order to preserve the being in a non-corporeal form in order to accommodate an afterlife scenario.
If that's the case, then unless the soul is a metaphor for your existence in the afterlife, it seems like the soul as a vessel to store everything that is you (while still alive), seems somewhat redundant if your brain is already performing that task.