darth_avocado is implying that he'd rather use a different index to measure inflation. Which is reasonable, this game where "real" doesn't mean real is not helpful. I've been seeing "real" growth in my gold holdings for years but mysteriously enough the weight hasn't changed. And while I'm ranting it drives me mad that we're supposed to pretend exponentially increasing prices are "stable", that is about as unstable as prices can get without starting a mathematics degree.

I doubt there is a compelling argument why people should have to use CPI as the comparison index. I'd consider any investment that only matched CPI to be losing value for example; they should be tracking something one of the monetary aggregates.