I think some of it has to do with the languages involved. I find the type systems of C/C++/Java to be helpful in figuring out what a piece of code does, as com

I think some of it has to do with the languages involved. I find the type systems of C/C++/Java to be helpful in figuring out what a piece of code does, as compared to the type systems of Python/PHP/Ruby where it's more difficult to tell what a variable contains. Frameworks help solve this problem because you can infer what type of data you've got by looking at what method it's coming from and where it's being used.