L.T.
L = f(x,y) + λ[g(x,y) - c]
∂U/∂x = λ·px
MRS = p1/p2
∫ f'(x)dx = F(x) + C
dY/dt = sY - δK
E[U(w)] = ΣpiU(wi)
Economist · Theorist · Writer

Οικονομικές
Αναζητήσεις

Exploring the mathematics of human choice.
Where economic theory meets the complexity of the real world.

The search for elegant answers to messy questions.

I'm Leonardo Tsaousi, an economist with a Master's in Economic Theory. My work lives at the intersection of mathematical rigour and real-world complexity — where Lagrangian optimisation meets the labour market, and where differential equations trace the dynamics of growth.

This space is where I think out loud. About the mathematics that governs markets. About the policies that shape lives. About the stubborn beauty of equilibrium — and what happens when it breaks.

I believe economics is too important to be left unexamined, and too beautiful to be left unexplained.

MSc
Economic Theory
12+
Years studying economic systems
Questions still worth asking
Game Theory Labour Economics Optimisation Dynamic Systems Welfare Greek Economy

«The curious task of economics is to demonstrate to men how little they really know about what they imagine they can design.»

— F. A. Hayek, The Fatal Conceit

Recent Writing

View archive →
01 Game Theory

The Varoufakis Gambit: Game Theory at the Eurogroup Table

How the 2015 Greek negotiations became the most expensive game of chicken in modern economic history — and what Nash equilibrium tells us about why it failed.

Feb 2026 12 min read
02 Labour Economics

Generation Metanastes: Brain Drain as a Rational Choice Model

350,000 Greeks emigrated between 2010–2019. When the expected utility of leaving exceeds staying, migration isn't tragedy — it's optimisation under constraint.

Jan 2026 15 min read
03 Mathematical Economics

The Beauty of Lagrange: Why Constraints Set Us Free

An intuitive guide to constrained optimisation. How the method that terrifies students is actually the most elegant idea in microeconomics.

Dec 2025 10 min read
Is GDP a sufficient measure of welfare?
The Solow residual and what it hides
Credit scoring as social stratification
Why minimum wage debates miss the point
The mathematics of inequality
Dynamic inconsistency in Greek fiscal policy
Bounded rationality and the coffee shop economy
What Keynes actually said vs. what we think he said
Is GDP a sufficient measure of welfare?
The Solow residual and what it hides
Credit scoring as social stratification
Why minimum wage debates miss the point
The mathematics of inequality
Dynamic inconsistency in Greek fiscal policy
Bounded rationality and the coffee shop economy
What Keynes actually said vs. what we think he said
Research Notes

From the Notebook

Shorter pieces, open questions, work in progress.

NOTE 01

On the Elasticity of Hope

The labour market doesn't just measure employment — it measures how many people still believe that sending a CV matters. When discouraged workers exit the statistics, we lose more than data points.

labour measurement psychology
NOTE 02

Credit Cards and the Illusion of Liquidity

When a 22-year-old signs for a credit card, they're not accessing capital — they're borrowing from a future self they haven't met yet. A note on intertemporal choice and the discount rates we never calculate.

behavioural finance time
NOTE 03

Why I Still Teach the IS-LM Model

It's wrong. Everyone knows it's wrong. Hicks himself said it was wrong. And yet — no framework in macroeconomics teaches you to think in general equilibrium faster. A defence of beautiful lies.

macro pedagogy models
NOTE 04

The Gini at the Kafeneio

Inequality in Greece doesn't live in the Gini coefficient. It lives in who can afford the €1.50 coffee and who pretends they've already had one. On the micro-economics of social performance.

inequality Greece micro
NOTE 05

Differential Equations for the Impatient Economist

You don't need to love calculus. You need to see that dy/dt = ry is the story of compound interest, population growth, and why debt spirals are not metaphors — they're mathematics.

math growth dynamics
NOTE 06

The Tragedy of the Greek Commons

Public beaches privatised. Archaeological sites underfunded. Tax evasion as a Nash equilibrium where everyone defects. On collective action failures in a country that invented the concept of the polis.

institutions game theory Greece
U(x,y) = xαyβ
∇f = λ∇g
Y* = A·Kα·L1-α
p·MUₓ/MUᵧ = w

The Language of Choice

max U(x,y) s.t. p⋅x + q⋅y = M
Consumer Optimisation
∂²f/∂x∂y = ∂²f/∂y∂x
Young's Theorem
limt→∞ k(t) = k*
Steady State Convergence
Newsletter

Stay Curious

One essay per week. Mathematics, economics, and the questions that keep me up at night. No spam, no clickbait — just ideas worth thinking about.