Personal notebook

The Stacks

A running catalog of what's being read and worked through — sorted onto shelves as it accumulates.

Productivity

Book · 4 chapters + summary

A Mind for Numbers

How to Learn The whole book, distilled into nine principles.
Two Modes The brain's two problem-solving states, and how to switch between them.
Procrastination Not laziness — a habit loop the brain runs on repeat.
Memory Why a fact wrapped in a story outlives a fact alone.
Chunking Small practiced pieces fuse into one move you stop thinking about.

Book · single page

Atomic Habits

Every habit runs the same four-stage loop — cue, craving, response, reward. James Clear's system for changing what you do without relying on willpower.

Bike

Notes · 3 sections

The Workshop

Waxing Clean chain, 75°C bath, ten minutes to soak.
Washing Soap, ten minutes, hose — no scrubbing needed.
Maintenance Log What got replaced, and at how many kilometers.

Economy

Book · single page

Accounting Made Simple

Three statements describe every company, and one equation always has to balance — assets, liabilities, equity, and the paper trail that keeps them honest.

Ethereum

Notes · 6 sections

Fundamentals

The Machine A Turing-complete VM on Byzantine fault-tolerant consensus.
Accounts Keys and no code, or code and no keys — there is no third kind.
Gas Metering answers the halting problem where a proof can't.
Transactions Atomic however many contracts they touch — but failure still costs gas.
Oracles Getting off-chain data on-chain, and what you trust to do it.
Metamask The password guards the browser; the twelve words are the wallet.

Chapter · single page

Zero-Knowledge Proofs

Convince someone a statement is true without showing them why — notes from the last chapter of Mastering Ethereum.

Solidity

Notes · 3 sections

The Forge

The Language Why smart contract languages got built from scratch — and the family that grew around one bytecode.
Foundry forge, anvil, cast — and never putting a private key in a .env file.
Ethernaut Predictable randomness, tx.origin phishing, and arithmetic that used to wrap silently.

five shelves so far