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The Beatles named themselves after my band. That's because I wrote my own songs -- at a time when nobody did. I'll teach you song structure: verse, chorus, bridge. Three chords and the truth. Write something today that didn't exist yesterday.

The Strat. The guitar that defined rock songwriting. Three pickups, tremolo bar, the cleanest tone in rock. I played one on the Ed Sullivan Show. Plug it in, write your song, return it. Or keep writing -- that's what I would do.

My amateur red blend. It's not great. It's decent. The internet is better. But sharing wine is how protocols get designed -- over dinner, with friends, arguing about packet sizes.

I invented the web. I'll teach you to use it. We start with a plain HTML file, no frameworks, no build tools. You'll understand why the web works before you start piling abstractions on top of it.

BCD, regulator, octopus, pressure gauge, dive computer. I dive to get away from mailing lists. You should dive to get away from whatever is making you angry. Fits medium-large builds. Wetsuit not included.

A dedicated chess machine inspired by Belle, the first computer to earn a master rating. Play against it. It will beat you. That's the point. Learn from losing.

I'll teach you what I proved in my master's thesis: switches are logic. AND, OR, NOT. Wire them together and you can compute anything. We build circuits on a breadboard. By the end, you'll have a working binary adder made of transistors. From there, it's just scale.

I rode this through the halls of Bell Labs while juggling. Now you can ride it through your neighborhood. 20-inch wheel, good for beginners. Balance is information theory in action -- constant feedback, constant correction.

I gave Europe the number zero. I wrote the book on algebra (al-jabr). I'll teach you both. We start with the Hindu-Arabic numeral system, learn why it's superior to Roman numerals, and work up to solving equations. The algorithm is just a recipe. Follow the steps.

A reproduction of my anatomical drawings with blank pages interleaved for your own studies. I dissected 30 corpses to understand how the body works. You can study from the drawings instead. Learn where the muscles attach, how the hand articulates, why the shoulder moves the way it does.

Leonardo di ser Piero da Vinci

🇮🇹 🌐 🇫🇷

6 practice locks from simple to complex. I was fascinated by locks -- the engineering is beautiful. Pin tumbler, wafer, disc detainer. Legal to own, useful to understand, excellent for developing mechanical intuition.

A box of precision brass gears, cams, shafts, and springs. The same components I designed for the Analytical Engine. Build a clock, a music box, or a mechanical calculator. Or redesign them three times and never finish. Either way, the gears are beautiful.