Legal Commentary

I want to sign off on my guest stint (thanks PrawfsBlawg!) with a simple thing that could make a big difference to the classroom: looseleaf casebooks.  One of the best pieces of advice I got as a beginning professor was to order a looseleaf copy of my casebook.  I could easily take pieces of the book home or read and review on the subway, coffeeshop, doctor's waiting room, etc.  As far as I know, this has long been a perk of professorship, with students either lugging the book or doing a self-help version by undoing the binding, but I just got an e-mail advertising looseleaf casebooks for students.  Why did it take so long?  40% cheaper?  Too easy to copy?  But I wonder if preparation would improve if the weight of the book had no impact on what students carried around....