You raise valid points, inky. But i think the purpose of the movie is not to be heavy on CGI in the first place. The movie is trying to potray the character's loneliness that is bordering on madness and extreme obsession and i say it succeeds on that due to Smith's strong potrayal. Especially when he had to kill his dog. wow, that is really a sad part. And the best part is no bgm on the movie! Wow, it really make the world more quiet and desolate. I like it. Not every movie can pull it off. As i mention, the only WTF moment for me is the ending. I was, what? It's the end already?!? yeah, more things could be fleshed out in the movie. Still pretty decent IMO.