SMALL PROJECTS. OPEN CURIOSITY.
Little things to explore.
A collection of web toys, interactive experiments, and ideas you can play with. Pick one and see what happens.
All toys
Substitution cipher
Make a secret alphabet, then turn detective. Count letter frequencies, test your guesses, and piece a hidden message back together.
Open playground ↗Central limit theorem
Find the shape of chance. Add random numbers, plot their sums, and watch three different distributions approach a bell curve.
Open playground ↗Vigenère cipher
Make a secret and discover how it works. Encrypt, decrypt, and follow every letter through the cipher square.
Open playground ↗Enigma machine
Turn the rotors and send a secret. Follow each letter through the machine and discover why the cipher changes with every keypress.
Open playground ↗Löwenheim–Skolem
Build a smaller infinity. Collect witnesses, compare mathematical universes, and explore how different sizes can share the same truths.
Open playground ↗