Attached Link: http://www.ilike.co.nz/SoftwareDev/dittoGUI.html

> Quote - This, though, begs another question: why CAN'T a Mac merge folders yet (and after all these years too...lol)

The problem is only with the drag and drop in Finder, merging is quite possible using the command line. The utility usually mentioned to solve the problem for those that need a GUI, is "dittoGUI" (see attached link).