Real products, running models
How it actually works
Each page is a model of something you use every day, running in your browser. Read the answer in a paragraph, then change one thing and watch the mechanism respond.
Flagships
Spotify shuffle
Why does a truly random shuffle play the same artist twice in a row?
Fisher–Yates against a shuffle that spreads each artist out, run thousands of times and counted.
Run it →
Autocorrect
How does “definately” become “definitely”?
Edit distance between the word you type and a dictionary, filled in as a DP grid.
Run it →