You missed that the opening of your quotation is «In its most common sense». So there is the other sense, "a theoretical framework for a method". (And you do no

You missed that the opening of your quotation is «In its most common sense». So there is the other sense, "a theoretical framework for a method". (And you do not easily find around expressions such as "having proposed a sociology (etc.)" - a theoretical framework for a "what"? You do not have a term for a sociological, psychological, archeological practice.) And you will surely find people that will propose that the other sense is more common than the one the Wikipedia editor identified as occasionally preeminent.