My first impression was of size. The Matrix is big. As big as a world, as big as a universe. There's a horizon, but it's a long was out, and it's an artifact of perspective, like the "vanishing point" of art and not of curvature, as in the "real" world. (In fact, the distance has the strangest sensation of non-linearity, if that makes any sense. It's like-and here I really feel the inadequacy of words-the further away something is, the faster distance increases. Like the Matrix is mapped onto some non-Euclidean space. Or maybe not.)