even when Memento leaves the question of whether Leonard already killed John G, whether his wife survived the incident, we know at the end that he chose to kill Teddy to justify his quest for revenge and be happy, probably Teddy was the cop assigned to the case, but that's another of the questions and doubts Nolan leaves in our mind and he does that to makes us feel like Leonard did during the whole film, a true work of art but whatever questions it may bring to your mind Inception deals with a much greater and complex world, Inception is a film with unlimited possibilities giving the fact that during the whole film the story takes place in the infinite world of dreams. The way I see it with Memento you can get as far as: Leonard imagined the whole thing while being in the hospital after he survived the Incident and killed his wife with the insulin, that's - as far - as you can get if you believe he made the whole Sammy Jenkins thing and the whole tattoo quest for revenge thing up, but that's almost pushing it to the ridiculous, the very story of within Inception can leave you to come into ridiculous conclusions and yet be justified as valid hypothesis, as I said, unlimited possibilities because of the world where the story is set, I don't call it plot holes like many people do, it's just the way Nolan wanted to do it, the beauty and originality of the film, another work of art

Memeories being distorted is awesome