I think that might be an extension that dynamic languages are good when you want to quickly write glue code, for example Rails. On the other hand, when your qui

I think that might be an extension that dynamic languages are good when you want to quickly write glue code, for example Rails. On the other hand, when your quick glue code becomes a very important batch job, gets more complex, or your Rails application becomes really big, you might want strict types. It's also hard as everything starts small, and it can be hard to know what will get big or not.