50 Ideas That Changed My Life

Ignore the title (and the teaser image, while you’re at it) — there are a lot of useful concepts in this lists. Some of which you will recognise, some you’ll hear for the first time. Among my favourites:

• Gall’s Law: A complex system that works is invariably found to have evolved from a simple system that worked.
• The Paradox of Consensus: Under ancient Jewish law, if a suspect was found guilty by every judge, they were deemed innocent.