S
SlitheryDee
Near the end when Teddy is giving his explanation, Leonard seems to have a revelatory moment where he sees the memories he had associated with Sammy now being played out with himself and his wife in the parts he originally thought Sammy and his should occupy. That was enough for me to think that he actually had killed his wife in exactly the way he remembered Sammy doing. In actuality, some other insurance adjuster denied his claim for compensation, but Leonard usurped that identity for himself in the memory. There was in fact no physical reason for Leonard to be incapable of making new memories which, along with the fact that he was retaining memories in some roundabout subconscious way, seems to indicate that the disease was psychosomatic after all. The clip of Sammy briefly changing into Leonard in the psychiatric ward (which I don't remember noticing in the movie) only seems to further support this conclusion. Leonard killed his wife by giving her too much insulin because he was sick and suppressed new memories as they were created. That does not mean that they were not created, but that he was unable to consciously recall them until they sifted to the surface, twisted in a way that could not make him realize that he was actually making new memories. I don't remember how much supporting evidence there was for the John G. incident, but I'm inclined to think that he fabricated it whole cloth as a mechanism for coping with the guilt he felt over killing his wife.
