> Both science code and web application code don't really need typing or really type hints. Where "science code" is "this python script I'm working on for my P

> Both science code and web application code don't really need typing or really type hints. Where "science code" is "this python script I'm working on for my PhD and no one else is ever going to use it", sure. Where "web application code" is "I need to get an MVP out for Tech Crunch Disrupt", sure. Where neither of those things are true - if your grad student project code becomes the basis for sucessive grad students' projects, or gets popular in industry, or if the web application code underlies a company for a few decades - for sanity's sake you want type hinting. Tests only go so far, and if I have to run a piece of code's test cases before I know what the code actually does, instead of just reading it, something smells rotten.