Throwaway culture is deeply embedded in the social psyche. i think that today (Specially in the united states) we are used to being able discard any product because we have the possibility (and infrastructure) to produce more. Back at home, when you are designing a building, you have to take into account that it will be in place for a while. here you can designing something like a (throwaway building) which can be razed and the site reused in a fraction of that time. I think that we have sacrificed aesthetics in favor of functionality. as said by the example put forward by Banham, the engine that can be accessed and serviced more easily is much more efficient (honest and beautiful) than the one machined and adjusted for aesthetics. Do not get me wrong, i do agree with Loos on the idea that ornament is primitive, but if this ornament is a byproduct of functionality, then everyone wins.