Which of these books is not like the others?
To the untrained eye, they may all look like boring books about unintelligible subjects. But in fact, one of these unintelligible books is written by Ruby on Rails superstars Chad Pytel and Jon Yurek (and some other guy I don't know, so I'll feel free to totally discount him here). Here is Chad, posing with his book.
In Barnes and Noble, actually. How cool is that? He wrote a book that you can buy anywhere! And then learn all about active record! And then do.... stuff! In Active Record!
**Disclaimer: There may be people who actually use this thing called Active Record, and I hope they like the book. :) **