how to tell a person's skill level by what they study to predict outcomes: beginners study the players. intermediates study how players interact within systems. experts study how systems interact with one another. then there's the best of the best, masters, who've learned move between all three layers of thinking, and know which matters most.

effort is dubious but, fortunately, quality is obvious

you can make anything work > you can make everything work

this email got a reply in <5 mins from Bryan Johnson I wish I realized earlier how you literally can get in front of any person you want in a few minutes using email / social media.