This is Beng Tan and welcome to Interesting Things, a curation of interesting stories and links from tech, work, biz, science and society. If it’s not a number, what is it? Demystifying NaN for the working programmer. There are few things that can trip up even experienced programmers more easily than floating-point arithmetic. Problems with Signal messenger app (Jan 2022) - Centralization means that the whole infrastructure is controlled by one entity. Developer tooling must spark joy - Happier people tend to be more pleasant to work with and to stay longer at their jobs. This has an impact on productivity. How to design better APIs - 15 language-agnostic, actionable tips on REST API design. The Truth About "MEH-TRICS" - Metrics aren’t worthless