I'm certainly not claiming that the future will necessarily resemble the past. But GP was making an argument from the past, so in that context we should certain

I'm certainly not claiming that the future will necessarily resemble the past. But GP was making an argument from the past, so in that context we should certainly at least try to get the past right as much as possible. (And there was (I am told http://philip.greenspun.com/research/tr1408/lessons-learned.html http://philip.greenspun.com/research/tr1408/lessons-learned.... ) the '80s, where the salary slump was driven by increased supply rather than a collapse in demand.)