[bad_user]

Encapsulation can be achieved quite efficiently if you have closures ... you can have good encapsulation (i.e. preventing access to the implementation details of an object) even in Javascript.

Many dynamic languages also have tools you can use to make your life easier ... with Python I'm using pylint/pychecker to keep me honest. My Emacs instance screams at me whenever I access a protected field of some object.

Also ... private/protected fields or final classes have caused much trouble for me. Overriding the behavior of a class is the easiest way to workaround various bugs without modifying the original source ... which in some cases is a PITA, while in other cases is impossible.

I once worked on a Java project that used a commercial library with no source-code ... to fix a stupid bug I had to manipulate the bytecode at runtime. Which shows again that private/protected/final access modifiers are pretty useless as guarantees ... a determined developer can get passed them.

It's just that you begin to hate life a little bit more.