Step 1 should be verify the information you're counting as facts.. re: McDonalds & ingredients

This means the same items are made in the same way with the same ingredients in very different economies around the world, making the Big Mac...

This is provably not true. (without any prejudice against BigMac as PPP indicator)

https://www.huffingtonpost.com/the-daily-meal/big-macs-aroun...