To indicate that this is so, a Polaroid photograph will fade instead of developing. Teddy might be an ex-con known as John Edward G. or he might not be him, we can never be sure. We are stuck like Leonard, not quite sure if he got the right man or not. Teddy is the one who is seen most often with Leonard as he goes on his investigation and he seemed to be a jolly fellow, but with a morbid sense of humor. The film is open to any interpretation.
Nothing is crystal clear, everything is ambiguous.
New characters come in and out of his life, and we like Leonard must try to sort them out and see who's telling the truth. A Polaroid of his motel reminds him where he's living. She will help you out of pity. His insurance doctors will prove it was a psychological rather than a physical injury and that his insurance doesn't cover that. She also believes the insurance people who think her husband is not trying hard enough to overcome his illness, rather than her husband.