UPDATED VERSION NOW AVAILABLE: If you haven’t had a chance to read A Dubious Expediency–my 2015 essay on the problem with mismatch on campuses–the updated version (2021) is now available electronically.
(Or you can buy it here in a book that also contains essays by Heather Mac Donald, Peter Kirsanow, Peter Wood, Maimon Schwarzschild and others. The book is named for the essay.)