Genie -- you can't proofread your own work, no matter how good you are. The brain sees what you want to see, not what is actually there. This has been proven "scientifically" any number of times and is well known in the graphic arts industy. And if you are checking the specifications, you will more than likely interpret them the same way you originally did. And those of us who started out as trade typographers also know that you go for speed, not accuracy. Typos are caught by the proofreader and corrected in the second galley run. It's too slow to go back and correct them in the first run.

Bat Goddess