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Money
The Rule of 72: How Money Actually Grows
Divide 72 by any rate and get its doubling time — then use it on your savings, your credit card, your fees, and inflation. The staircase, both directions.
Included free with All-Access — $20/year for the whole catalog.
What you'll walk away with
Why compounding defeats intuition: growth earning growth, the flat-then-absurd curve, and the last doubling that equals everything before it.
The Rule of 72 as a five-second reflex: 8% doubles in 9 years, a 24% card doubles your debt in 3, and 3% inflation halves cash in 24.
The early-start arithmetic: why a decade of delay costs half the final pile, and why any amount today beats heroics later.
The reverse gears and the map: debt and fees priced as lost doublings, the speed tiers from checking to index funds, shelters, the match — and the ordering that follows.
6 parts · 22 min
2
The Rule of 72
4 min
4 min
3
Time Beats Amount: The Early-Start Arithmetic
4 min
4 min
4
The Reverse Gear: Debt, Fees, and Inflation
3 min
3 min
5
Where Compounding Actually Lives
4 min
4 min
6
The Compounding Mindset
4 min
4 min
Bonus: one-page cheat sheet
Every part's key points, printable — included when you unlock
Read Part 1 free — no account needed. $1 unlocks the remaining 5 parts plus the cheat sheet, forever.
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$1
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