ideas
finance
finance writing on leonacosta - essays, notes and ideas by Leon Acosta, one idea per post.
nominal value fallacy
we've confused a number as the definition of wealth, but that math doesn't hold in traditional finance. what if everything you work for today, is worth more tomorrow
apr 16, 2026
the big mac should be getting cheaper
a fixed product rose 154%. CPI says 82%. the gap tells you everything – US 2000–2024
apr 2, 2026
the price of everything is the price of the dollar
five products, one pattern – why prices rise when we keep getting better at making things
apr 5, 2026