• Dillon's blog posts If It Compiles It Works and When It Compiles But Doesn't Work
• Wiring
• Refactoring
• Running code paths to check it works vs checking assumptions at the gate
• Dillon's talk Types Without Borders
• Shotgun surgery - Parse, Don't Validate episode
• Order independent
• You can trust your tests
• Keeping what you depend on to a minimum helps make things trustworthy
• Semantics can make it harder to predict (like parser)
• Json.Decode.maybe is almost never what you intend
• Scaling Elm Apps talk by Richard Feldman
• Gary Bernhardt's Wat video
• Elm Radio Opaque types episode