What purpose would such a measure serve? And do you try to find a universal measure or one that is individual for every person? Because different people have different goals, you could try to measure how well reality aligns with their goals, but then you just select for people who can accurately predict what they can achieve.

I have a definition of success. For me, it's very simple. It's not about wealth and fame and power. It's about how many shining eyes I have around me.

--Benjamin Zander