Reread cybernetics this week and suddenly realized one thing: cybernetics is essentially about one thing—how to use information to guide energy and fight entropy. Investment is analogous—using information to guide capital and combat market entropy. Ashby’s Law: Your control variety must be ≥ system complexity. People who only look at candlestick charts are trying to use a single variable to navigate a market driven by macro, micro, geopolitical, and psychological factors. That’s not bravery; it’s physically impossible. Buffett’s 'circle of competence' is an active application of Ashby’s constraint—it’s not about whether your abilities are strong or not, but whether you admit your dimensions are insufficient.