Can't you read the signs?

Signs that you've been working too long:
1. You say, "Oh! I have dinner!" when you realize you didn't eat your lunch.
2. "Are you still here?" asks the janitor.
3. You contemplate going directly to bed when you get home.
4. You create elaborate playlists to keep you company. (Is 42 songs too many?)
5. You blog just to give yourself a break from staring at the white, white pages of proofs.
6. You can only think in lists.