Things that work well are hard to identify, it takes time and effort. Worse, companies are constantly changing products (either they stop making models or chang

Things that work well are hard to identify, it takes time and effort. Worse, companies are constantly changing products (either they stop making models or change the way they are made) so even if you successfully identify one thing the knowledge will rapidly become obsolete. So rapidly that you'll often not even have an opportunity to reuse that knowledge a single time.