Maybe your code is ok and understandable to you when you first write it, but when someone else has to work on it a month or two later, a lack of types makes it

Maybe your code is ok and understandable to you when you first write it, but when someone else has to work on it a month or two later, a lack of types makes it significantly more difficult. It sounds like your process is a bit of a drag on you and I think you should improve it.