Response to Maranda on Frank's Obsessions

This blog made me think of The Dark Knight (maybe you shouldn’t read on if you haven’t seen it) in contrast to Batman because Frank is a character of such pure evil that in a sense, similar to Heath Ledger’s Joker, he is just absolute. We don’t know why Frank is obsessed with these songs, or the fabric, or the gas, or why he is the only person in this reality to use the F word, (except one other character that was told by Frank to use it), or really any background on him. Had Lunch or the screenwriter chosen to include all that, we might have ended up with Burton’s version of evil, depicting the how and the why and the back-story behind the character. I personally think that the absolute character is the way to go and Frank would have been less of a strong character had we as the audience been privy to the back story.