I build identity and security systems like service identity, PKI, OAuth and OIDC. I wrote code for years, consulted on human identity systems, then worked on Applied Cryptography at AWS and identity infrastructure at Snowflake. What I’ve Been Learning The Gang of Four didn’t invent design patterns. They noticed the same solutions kept appearing across unrelated codebases and gave them names. I think the same thing is happening with prompt engineering. The Catalyst is the clearest example I h