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Hillel Wayne

Writer and consultant on formal methods and software correctness; author of Practical TLA+ and Logic for Programmers.

2 books on the record · 14 Oct 2019 – 6 Aug 2025

The bar next to each date shows how long ago it was said: 7d is days, 4yr is years.

loved it

Data and Reality by William Kent

It's heady and mindbending and delightful and completely changed how I think about software. I love it and recommend it to everybody I meet.

on buttondown.com · 14 Oct 2019

Everything Hillel Wayne recommends — not just books — on rcmnd →

That little bar

It says how long ago something was said, so you can tell last month from 2014 without doing the arithmetic. Full and green is recent; it drains and cools as the date gets older, and empties completely at about 6 years.

A striped bar means the date itself is an estimate — the source did not carry an exact one. An entry with no date at all gets no bar.