Carnegie, the Founder of the Credit-Hour, Seeks Its Makeover - Curriculum - The Chronicle of Higher Education

While there are certainly reforms that I question, I do agree that the inertia of some outdated ideas in education are a serious drag on progress. The Carnegie Unit is one of those ideas. Unfortunately, so much is built around credit hours - school day schedules, credit hours, transcripts, graduation requirements, etc., that it's not a trivial thing to discard.