Start Here | Blockchains | Economics
Decentralized Finance (DeFi) is the attempt to rebuild the entire financial system — lending, borrowing, trading, insurance, savings — without banks, brokers, or centralized institutions. Everything runs on smart contracts on blockchains.
Why it matters: traditional finance requires intermediaries that charge fees, restrict access, and can freeze your assets. DeFi replaces intermediaries with code. If you have an internet connection and a crypto wallet, you can access financial services that billions are currently excluded from.
The building blocks:
Decentralized exchanges (DEXs) — trade assets peer-to-peer without a centralized exchange. Uniswap, Sushiswap. No KYC, no permission needed, available 24/7.
Lending protocols — deposit crypto as collateral, borrow against it. Aave, Compound. Interest rates set algorithmically by supply and demand.
Stablecoins — cryptocurrencies pegged to fiat currencies (usually USD). USDC, DAI. Bridge between volatile crypto and stable money.
Yield farming — providing liquidity to protocols in exchange for returns. High risk, high reward.
DAOs — Decentralized Autonomous Organizations. Treasury and governance managed by token holders. No CEO, no board. See Holocracy for related ideas.
The risks:
- Smart contract bugs — code is law, and buggy code means lost money
- Volatility — crypto prices swing wildly
- Regulation — governments are still figuring out how to regulate DeFi
- Complexity — the UX is still terrible for normal people
Related: Blockchains, Free market capitalism, Radical markets, Asset Classes, Merckel Tree