Can you please expand what you mean by "the book was written by two people who already had a set viewpoint." First of all, it's a paper not a book. Second of all, you're discrediting their arguments by attacking their motives. That's fallacious reasoning. I can tell you're unwilling to change your mind by the very fact you're not even willing to address their arguments. Instead, you're saying "let's wait for someone to disprove it." Do you even realize that there's is a review of all other studies? This is not an original experiment that you have to wait for someone to replicate the experiment. You should be embarassed to say something like "that's how science works" when you employ irrational arguments (attacking the motives) in the very same post.
Let me try to make this more clear, there's no point talking to you about this unless you want to actually read the linked text and point out specific flaws in it. You're basically saying, "I don't believe it even though I don't know what it says." Don't you realize how idiotic that is?
http://www.amazon.com/Minimum-Wages-.../dp/0262141027
That's the link to their book. I looked through their paper, and also got a little background on them. The book "Myth and Measurement" slammed their research pretty hard, and this is their rebuttal to it. So you don't think their obvious bias and the history behind the paper matter?! You're the one who should be embarrassed.