Finance & Economics.
Most economic motions reward whoever can do the arithmetic out loud. This is the working vocabulary: what makes prices move, what taxes actually do, why interest rates are the lever every government keeps pulling.
01Core concepts
Inflation
Sustained rise in the general price level. Erodes savings, hits fixed-income earners first, pressures central banks to raise rates. "Two percent" is the target most rich-country central banks aim at; above five percent governments start to lose elections.
Monetary policy
How central banks (Fed, ECB, RBI, BoE) steer the economy by changing interest rates and the money supply. Lower rates = cheaper borrowing = more spending. Raise rates = cool inflation but risk recession.
Fiscal policy
Government spending and taxation. Expansionary fiscal policy (deficit spending) pumps demand into the economy; contractionary fiscal policy (austerity) does the opposite. Politicians control this; central banks don't.
Progressive vs regressive taxation
Progressive: higher earners pay a higher rate (income tax, capital gains in most countries). Regressive: lower earners pay a higher share of income (sales tax, VAT, lottery, gas tax). Most real tax systems are a mix.
Pigovian tax
Tax on an activity that creates negative externalities, sized to internalize the harm. Carbon tax is the cleanest example: producer pollutes, society pays for cleanup, tax shifts the cost back to the producer.
Market failure
Five canonical ones: externalities (pollution), public goods (national defense), monopoly power, information asymmetry (used cars, insurance), and inequity (markets allocate efficiently, not fairly). Most "should the state regulate X" motions live here.
Deadweight loss
The economic value destroyed when a tax or price control distorts a market away from its efficient point. The standard counter to "just tax it more" arguments: every tax has a deadweight cost beyond the revenue it raises.
GDP
Total value of goods and services produced in an economy in a year. Measures activity, not welfare. "GDP grew but median wages stagnated" is a sentence you should be ready to back with examples.
02How this shows up in debates
Redistribution motions
"THBT progressive taxation should fund universal basic income." Live where the disagreement is: gov says income inequality is a market failure markets won't self-correct; opp says distortion costs and work-disincentive effects exceed the redistributive gain.
Industry policy / subsidy motions
"THW heavily subsidize semiconductor manufacturing." Identify the market failure (national-security externality, dependency on Taiwan), price it, then debate whether subsidies actually fix it or just hand money to incumbents.
Central-bank-independence motions
"THW give elected officials direct control over interest rates." The case isn't "economists know best"; it's about time-inconsistency: politicians have a structural incentive to inflate before elections.
Trade & tariff motions
"THBT free trade has, on net, harmed the global working class." Reach for the China shock literature (Autor, Dorn, Hanson) on losers from import competition, not vague "globalization good or bad" platitudes.
03What people get wrong
"Printing money always causes inflation."
Money supply matters, but velocity (how fast money changes hands) and expectations matter just as much. Post-2008 QE expanded the monetary base massively without consumer inflation because the new money sat as bank reserves.
"Tax cuts pay for themselves."
Sometimes true at very high marginal rates (Laffer curve right of the peak), basically never true at the rates rich countries actually levy. CBO scoring of every major US tax cut since 1981 shows revenue losses.
"Trade deficits mean a country is losing."
A trade deficit means the country is importing more goods than it exports; it's typically balanced by a capital-account surplus (foreigners buying domestic assets). The US runs a persistent trade deficit because the world wants to hold dollars.
04Self-check quiz
Five questions to check what stuck. Click an option, the right answer and the why appear below. Your best score saves locally so you can come back and beat it.
05Sample motions
THW abolish the corporate income tax and replace it with a higher capital-gains tax.
Argue →
THBT central bank independence has, on net, harmed democracy.
Argue →
THW impose a global minimum corporate tax of 25%.
Argue →
THBT economic growth is no longer a worthwhile policy goal for high-income countries.
Argue →
THW replace the welfare state with a universal basic income.
Argue →
06Where to go deeper
The Undercover Economist
by Tim Harford
Best entry point. Each chapter pegs one economic concept to a real-world thing (Starbucks pricing, used-car markets, hospital scheduling).
Capital and Ideology
by Thomas Piketty
The data-heaviest argument for redistribution in print. Don't quote the whole thing; do know the wealth-concentration numbers.
The Wages of Destruction
by Adam Tooze
How economic constraints shaped one of the largest policy decisions of the 20th century. Useful for trade-and-war motions.
Argue a motion on Finance & Economics.
Pick a side. The AI takes the other. Three minutes per speech, judge ballot at the end.
Argue this →