060: Building Trustworthy Tools

Error messages should give three pieces of infoThe problemWhy it's a problemHow to go forwardNeeding to do magic incantations to get things into a good state adds cognitive load and makes debugging harderMake tools more predictableClear mental model (avoid inconsistencies and leaky abstractions)Doing an operation through different means should consistently arrive at the same resultGive contextAvoid caveatsTweet about layering platforms properlyExtensible web manifestoAvoid boy who cried wolf (becoming blind to noise from errors or warnings or other feedback)Halo Effect