We don't need sound, because we have intertitles. And we don't need color, because we have enough shades of gray to represent color "well enough."

Adding these elements would be far too distracting. And if we weren't distracted by sound and color, then what's the point in having them there?

Artists should work in the most limiting possible way -- in a way that everyone is already accustomed to. Otherwise, they're cheap, tawdry sensationalists. Down with change! Down with innovation!

Wait... what?