[Huh? Pass-by-reference ALWAYS requires passing a reference by value. That's how it works. The question is whether the referenced object is a COPY of the caller's object, or an ALIAS for the user's value. Most modern languages pass by reference for non-primitive types.]
This person is confused, though it's obvious and understandable to those who've been down the road before how it happens. Most mainstream languages that are taught to be "pass by reference" are actually of the "pass by reference value" sort. Lack of exposure to languages that actually implement pass by reference is the culprit. Of course if your experience is limited to C, C++, Java, and others that use the "pass by reference value" approach, then you'll come away thinking that "pass by reference value" is what "pass by reference" means and this is what any and every language "ALWAYS requires" when setting out to implement "pass by reference"—you just don't have the appropriate frame of reference to see how it could be otherwise.
