Young people are coming around ... I used to write code in C, C++ then Java, C# (.NET v1). I could never understand how people could implement large systems wi

Young people are coming around ... I used to write code in C, C++ then Java, C# (.NET v1). I could never understand how people could implement large systems with dynamically typed languages such as Ruby or Python. They are great for smallish scripts, but once your codebase (and team) grows, they become a nightmare to maintain. In my experience, large codebases of those types of languages have a lot of "magic" thing happen. There's a lot of implicit stuff that one has to guess or spend time "following the code" to understand what it is doing. And I say this after having built a major lending platform from scratch in Ruby, including a major Machine Learning scoring system in Python, having to maintain with a good sized payment system in pure JavaScript, and nowadays dealing with a major trading/liquidity system in Ruby. They are fun languages, but once the code and systems start to scale, static typing really helps. For that reason I've seen a lot of these endeavours try to move to TypeScript or other typed languages.