Interactive stories and visual systems

Visuals

A curated collection of visual explanations, simulations, and standalone interactive works.

chains
1−1/R₀
Interactive explainer
Languages: English / Chinese / Japanese

Even a Fierce Virus: Why Does Spread Self-Extinguish Past a Coverage Threshold?

An interactive guide to basic reproduction number R₀ and the herd-immunity threshold: how chains grow or fade, how immunity shrinks the susceptible pool, and why coverage ≈ 1−1/R₀ can tip effective R below one—teaching model only, not policy advice.

Open experience
bell
tails
Interactive explainer
Languages: English / Chinese / Japanese

In a World of "About Average," Why Do Extremes Keep Showing Up?

An interactive guide to the normal (bell) curve: why most outcomes pile near the mean, how independent small shocks stack into that shape, what 1/2/3σ bands mean, and why rare tails still appear in large samples—mechanism only, not a formula drill.

Open experience
→ +
priors
same +
Interactive explainer
Languages: English / Chinese / Japanese

Same Lab Result—Why Do Two People Reach Opposite Conclusions?

An interactive guide to Bayesian updating: how different priors plus the same positive test can yield opposite posteriors—base rates, likelihood ratios, and tree/area intuition. Teaching numbers only; not a medical diagnosis.

Open experience
(1+r)ⁿ
↗
Interactive explainer
Languages: English / Chinese / Japanese

0.1% Extra a Day—How Far Ahead Are You in a Year?

An interactive guide to compound growth: why discrete compounding pulls away from linear add-ups, how a tiny daily rate becomes a large gap over 365 steps, and why time horizon matters as much as the rate—mechanism only, no investment advice.

Open experience
nominal ↑
real ↓
Interactive explainer
Languages: English / Chinese / Japanese

When More Money Is Printed, Why Does Your Pocket Feel Thinner?

An interactive guide to inflation as purchasing-power dilution: how money or demand shocks lift the price level, why nominal cash is not the same as real buying power, and how a single rising price differs from a general rise.

Open experience
P × V
Interactive explainer
Languages: English / Chinese / Japanese

How Price and Volume Work Together

Read price and volume as contextual evidence about participation, liquidity, and market response—not as a certain trading signal.

Open experience
Interactive explainer
Languages: English / Chinese / Japanese

How Air Conditioners Work

Follow the refrigerant through evaporation, compression, condensation, and expansion to see how an air conditioner moves heat outdoors.

Open experience
Interactive explainer
Languages: English / Chinese / Japanese

What Is Loop Engineering?

Learn Loop Engineering in plain language: contracts, bounded attempts, evidence, durable state, budgets, stop routes, human review, and system improvement.

Open experience
Interactive explainer
Languages: English / Chinese / Japanese

How Typhoons Form

Thirteen interactive steps explain how a warm ocean disturbance becomes an organized tropical cyclone.

Open experience
↗
Interactive explainer
Languages: English / Chinese / Japanese

Why Pacific Warming Shows Up in Grocery Prices

Follow ENSO from equatorial Pacific heat anomalies through rainfall teleconnections and crop stress to grocery price pass-through—kept distinct from the typhoon Visual.

Open experience
C·C
C·D
D·C
D·D
2×2
Interactive explainer
Languages: English / Chinese / Japanese

Why Two People Who Want Less Jail Time Both Get More

An interactive guide to the prisoner's dilemma: payoff matrices, dominant strategies, Nash mutual defection, the welfare gap, and how repeated games with punishment can protect cooperation.

Open experience
δx₀
↗
Interactive explainer
Languages: English / Chinese / Japanese

Can a Butterfly's Flap Really Start a Tornado?

An interactive guide to sensitive dependence in chaos: tiny initial differences, exponentially diverging trajectories, predictability horizons, and why the butterfly is a metaphor—not a literal cause.

Open experience