https://investmentmoats.com/on-great-fund-managers/warren-buffett-on-great-fund-managers/warren-buffett-uses-this-as-his-market-valuation-tool-heres-where-it-may-screw-you-up-if-you-use-it/
Warren Buffett uses this as his market valuation tool. Here’s where it may screw you up if you use it