I used to think that the 2D-characters complaint about Atlas Shrugged and other novels of Ayn Rand was legitimate criticism, but statist and and other coercive collectivists keep using the same arguments that the supposedly cardboard-cutout villians used in the book. The elusive 3rd dimension compulsively acts out Ayn Rand's characters for us, while criticizing her novels for not having realistic characters. One of the most striking ironies of the modern world.
I'm even starting to wonder if they are secretly copying certain passages for use in their ritualistic scolding.
If the characters are 2D, it's because Rand is holding up a mirror to flatland, even if possibly in spite of herself as well.
Adapted from a comment by robc at reason.com