There would be no opportunity cost?

I've been reading Rod Hill & Tony Myatt's very well done "The Economics Anti-Textbook: A Critical Thinker's Guide to Microeconomics." It is meant as an antidote to a lot of the misleading propaganda found in mainstream economics textbooks. I will most likely recommend it to the students I teach in my intermediate course. But, like any intellectual effort, especially a first edition, it is not