College Costs McCardle on whether college is worth it. Here's a point I don't understand:

notes that while we may have replaced millions of filing clerks and payroll assistants with computers, it still takes one professor to teach a class. But he also notes that “we’ve been slow to adopt new technology because we don’t want to. We like getting up in front of 25 people. It’s more fun, but it’s also damnably expensive.”

I get why college can't be "more efficient" and hence cheaper -- but why would this factor make it more expensive than inflation? It seems like the relative price would stay the same. It makes more sense to imagine the administrative costs booming, better food, and better facilities costing a lot more.