Economist · builds and governs data & AI systems

Diego
Tejada Cardenas

Statistical imagination applied to the unmeasurable.

five figures, one object · the lens names the parts · drag to walk around · scroll for the rest

a site for ideas · economics · statistics · philosophy

Most people see three dimensions. Training adds a fourth.

Old instruments, well used — to see the structure under outcomes: incentives, institutions, the residual nobody models. Every page here has two layers. You are carrying the lens.

the surface says what; the lens says why.
story — a summary; expand if you want the crossings

Where the ideas come from. A childhood spent crossing the distribution.

Two family sides, two economic worlds, a childhood between Lima, a farm, and other countries — then Toronto at eighteen with little English, a kitchen, and a few doors that bought me the rarest input of all: time to think. Trained in economics; the crossings are the credential. The ideas are the point.

the range, not the rank, is the thing I learned to read.
I–II

Two worlds, and the crossings

Lima; a farm every summer; other countries, briefly. Different societies, a similar seat in each — surrounded by every level at once.

the same seat in different societies is a natural experiment.
III–IV

The setback, and the doors

Toronto at eighteen: months to find work, a kitchen, the language. Then a bridge program, a home full of books. Without them, probably still in that kitchen.

the doors were institutions. the counterfactual is the kitchen.
V–VI

The turn, and now

The Wealth of Nations, one counselor's word, economics. Today: Toronto — and the flow reversed: I used to depend on others; now others can depend on me.

"time to think is a unique luxury that we don't think much about."
read the full story →
writing — newest first; the index keeps the rest

Where the thinking shows its work. A ledger, not a feed.

Short notes on what is current; an essay when one is ready. Numbered in the order they were published, newest on top.

2 of 2 · newest 2026-04-12 · numbered by publication, never by importance. open the index →
ideas & projects — one lane, two weights

Where the instruments get used. And talked about.

Ideas are light: a title and a few lines, in conversation with what is current. Projects are the showcase unit: the decision, the measurement, one visual — and the reading under the lens.

ideas — light · a conversation around current topics
projects — the showcase unit
Plate I · Case study · in progress

Toronto Animal Shelter Analytics

An adoption-outcome analysis of Toronto’s shelter data — the original portfolio project, now being rewritten as a proper case study with the methodology on the page.

adoption outcomes · open data · Toronto Case study in progress
the visual
the reading — analysis that starts from a life, not a dataset: the house pattern, proven once.
Plate II · Interactive · live

The Analyst Scout Dossier

An interactive, Football Manager–style map of the analytics craft — six pillars of attributes, twenty-two roles, one honest self-assessment.

six pillars · twenty-two roles Open the dossier →
the visual
statistical imagination applied to the unmeasurable — pointed at myself first.
Plate III · Practice · write-ups in progress

Analytics Engineering Work

The day craft: warehouse models, dashboards built to be trusted, and pipeline design that stays boring on purpose.

warehouse models · dashboards · pipeline design Write-ups in progress
the visual
the reading — what belongs to the employer stays there; the mechanism travels.
open the lane →

Improvement of the people alive.

— not by getting more, but by getting better. start with the ideas →