Money has no inherent value. A $100 bill is a piece of cotton-linen blend that costs 17.5 cents to produce. Its value exists entirely because everyone agrees to treat it as valuable. This is fiat currency — money by government decree, backed not by gold or physical commodities, but by collective trust in the issuing government.

This isn't a weakness — it's a feature. Fiat currency gives governments flexibility to manage economic crises (printing money during recessions, for example). But it also means that the value of your savings is directly tied to government monetary policy decisions you have no control over. When the Federal Reserve decides to increase the money supply, your existing dollars buy less.

Before 1971, the US dollar was pegged to gold (the Bretton Woods system). President Nixon ended gold convertibility, creating the pure fiat system we have now. Since then, the dollar has lost approximately 87% of its purchasing power. A dollar in 1971 buys what 13 cents buys today. This isn't a conspiracy — it's the documented, intentional effect of monetary policy that targets 2% annual inflation.

The implication: holding cash is not "safe." It's a guaranteed loss of purchasing power at roughly 2-3% per year (and sometimes much more). Understanding this changes the entire framing of "saving" vs "investing."

Most people believe banks lend out depositors' money. This is wrong. Banks create new money when they make loans through a process called fractional reserve banking.

When a bank approves a $300,000 mortgage, it doesn't transfer $300,000 from depositors' accounts to the home seller. It creates $300,000 in new money by crediting the borrower's account. The money didn't exist before the loan was approved. The Bank of England confirmed this in a 2014 paper: "Whenever a bank makes a loan, it simultaneously creates a matching deposit in the borrower's bank account, thereby creating new money."

The reserve requirement (how much actual cash the bank must hold relative to its loans) was 10% before 2020. In March 2020, the Federal Reserve reduced it to 0%. Banks are no longer required to hold any reserves against deposits. This means bank lending — and therefore money creation — is constrained primarily by willingness to lend and regulatory capital requirements, not by the amount of deposits they hold.

Why this matters: approximately 97% of money in circulation was created by commercial banks through lending, not by the government printing physical currency. The money supply expands when banks lend and contracts when loans are repaid. Economic booms and busts are largely cycles of credit expansion and contraction. Understanding this mechanism is foundational to understanding everything else about finance.

Inflation is typically described as "prices going up." More precisely, it's the purchasing power of currency going down. The distinction matters because it changes who you see as responsible.

"Prices going up" frames inflation as a market phenomenon — greedy companies raising prices. "Currency losing value" frames it as a monetary policy outcome — the result of expanding the money supply faster than economic output grows.

Both frames contain truth, but the second is more structurally accurate. When the Federal Reserve creates money (through quantitative easing, lending to banks, or purchasing government bonds), each existing dollar represents a smaller fraction of the total money supply. This dilution reduces purchasing power.

Inflation is a wealth transfer from savers to borrowers and from workers to asset owners. If you hold cash savings, inflation erodes your purchasing power. If you hold debt at a fixed interest rate, inflation reduces the real value of what you owe. If you own assets (real estate, stocks), their nominal prices rise with inflation, preserving or increasing your real wealth.

This is why the financial system rewards borrowing and asset ownership while penalizing cash savings. It's not accidental — the entire structure incentivizes debt-funded asset acquisition because that's how money creation works. People who understand this build wealth differently than people who don't.

Understanding the monetary system changes several default assumptions:

1. Cash is not safe: Holding cash guarantees purchasing power loss. A "safe" savings account earning 0.5% while inflation runs at 3% loses 2.5% of real value annually. Over 30 years, that compounds to a ~53% loss of purchasing power.

2. Debt isn't always bad: Strategic debt (mortgages at fixed rates below inflation, business loans that generate returns above the interest rate) can build wealth faster than cash savings. The system is designed to reward this.

3. Financial literacy is not optional: The rules of money are not intuitive. They were designed by and for institutions. Without understanding them, you're participating in a game whose rules you don't know — which is how the house always wins.

4. The system changes: Monetary policy shifts (interest rate changes, quantitative easing, reserve requirement changes) directly affect your financial position. Ignoring macroeconomics doesn't protect you from it.

5. Inflation expectations should inform every long-term financial decision: retirement planning, salary negotiation, real estate decisions, and investment strategy all require accounting for purchasing power erosion.