That's kind of the point of default values, though. If you wanted to make a change to the method and you want it to break to alert you to all the calls, then yo

That's kind of the point of default values, though. If you wanted to make a change to the method and you want it to break to alert you to all the calls, then you can add a keyword without adding a default value for it. def foo(kwargs = {}, frob:) kwargs end