Google is good for searching immensely vast troves of information simply because there is no other way you could really do it. A categorical index of the entire

Google is good for searching immensely vast troves of information simply because there is no other way you could really do it. A categorical index of the entire internet would be fairly un-feasible. OTOH when we have smaller and more focused collections of information such as programming documentation or catalogues of similar products we tend to find it easier to navigate with categorical listings or simpler search algorithms.