typene unlocks a lot of these sort of durability ideas. Another one that you talked about, i think is reall interesting this context, has to do with e collection types and knowing the right data type. If you're not addressing the as and find it, you're just kicking the can on to a future maintainer who then has to add that to the 20 other things an troke trackones throughout the rmainance of the program. The problem is, a type checker isn't the greatest saying, oh, this isa dict some of the keys are strings, others are ents, others are decimals, and the values are all over the type. Use of