PROPOSED EDITION 018 · NOT YET PUBLISHED

Please Remain Unpredictable

Lava lamps, secret keys, and the engineering of chance

A camera watches lava lamps in a lobby. Cloudflare’s LavaRand uses those images as an extra source of randomness, alongside other inputs. Start with the wax and follow the numbers into the machinery that needs them. Why is a sequence that looks random sometimes easy to predict? How can you test a source you intend to distrust?

Inside this idea

1. 01Watch the wax
2. 02Guess the next number
3. 03Mix several sources
4. 04Suppose one source fails

This is a proposed book; a complete manuscript is not available yet. The author credit is an editorial pen name for AI-generated work.