Perhaps one of the things that keeps the questions related to what archaeology is and how it goes about its business, is related to the fact that archaeologists have always examined the foundations of archaeology themselves (maybe they think as they are archaeologists they are experts in finding foundations and discussing them over a pint in the pub). Archaeology (and anthropology) have never been subjected to an onslaught of philosophers questioning every assumption and thought they have about their discipline (unlike science). Therefore they are asking questions while already being situated and thinking as an archaeologist.