That’s because they never read Hazlitt’s classic.
Go here for help:
http://www.amazon.com/Economics-One-Lesson-Henry-Hazlitt/dp/B001G8NW6Y/ref=sr_1_2?ie=UTF8&s=books&qid=1278167272&sr=8-2
Time for a a beer, another pressing problem solved.
Thanks for the link. Sounds like a good companion to Schiff’s book.