2026-02-11T09:26:54+00:00 https://explained-from-first-principles.com/feed.xml Explained from First Principles Explained from First Principles is a technology, science, and philosophy blog for curious people. Kaspar Etter contact@ef1p.com Number theory explained from first principles 2022-09-17T00:00:00+00:00 2026-02-10T00:00:00+00:00 https://explained-from-first-principles.com/number-theory/ A lot of modern cryptography builds on insights from number theory, which has been studied for centuries. Email explained from first principles 2021-05-07T00:00:00+00:00 2026-02-10T00:00:00+00:00 https://explained-from-first-principles.com/email/ Modern email is a patchwork of protocols and extensions. Here is one article to understand them all. The Internet explained from first principles 2020-08-05T00:00:00+00:00 2026-02-10T00:00:00+00:00 https://explained-from-first-principles.com/internet/ Learn more about this critical infrastructure, which you likely use for hours every day.