Python is type hints which kind of implies they have no effect. With my pie it's a little bit closer. They can if you in certain circumstances pants itself uses its own code type annotations at runtime to in an interesting way but generally running my pie just is an extremely effective quality control check in your code. Another one you've given a shout out to is a proto buff for protocol buffers. I mean people know Rest and JSON they may have scars from soap and XML. What's proto buff? I just had XML PTSD for a second there. Yeah I'm sorry I'll send it over after the show.