You miss what the article says?You never make the same wages in a deflationary spiral. That's the problem. If you have a bunch of hard capital(i.e. gold) then you're theoretically set, but then gubmint will make gold hoarding illegal and then you really are borked.If you continue to make the same wage, and the price of goods goes down, well... you figure out.
I just asked this of my 6th-grader, and he got it right.
I still have the pen around here where he signed the only pay raise he ever authorized.