Every time Parker posts this he gets a lot of reasonable pushback (to which he often responds -- check out the most recent tweet of his on this).
It is very flawed as far as being a real measure, yet, there is something clean and simple about checking the price of a single good at the same store over years. It makes the point in a way that "baskets of goods" and more nuanced inflation adjustments simply don't.
Every time Parker posts this he gets a lot of reasonable pushback (to which he often responds -- check out the most recent tweet of his on this).
It is very flawed as far as being a real measure, yet, there is something clean and simple about checking the price of a single good at the same store over years. It makes the point in a way that "baskets of goods" and more nuanced inflation adjustments simply don't.