Here's an absurd claim: If you want to estimate a baseball player's true batting average, you should look at wheat prices.
Not metaphorically. Not as a sanity check. Actually use them in your calculation. Your estimate will be more accurate.
This isn't a trick. It's called Stein's Paradox, and it broke statistics in 1956. The proof is airtight. The math is correct. And yet it feels deeply, fundamentally wrong.
Thank you for this. Have you heard about PPP (Purchasing Power Parity)? Some pages sell products -50% in Poland because we don't earn as much as in other countries.