Digital devices actively discourage this with threats of voiding your warranty, or, in the case of Apple and other, making it deliberately difficult to disassemble thanks to bizarre screws and fasteners that require expensive, specialized tools. Pre-digital things tend to be the opposite, often encouraging you to descstruct them by providing detaild schematic (early Apple computers did this as well). This means that the value over time of digital devices is necessarily always falling unless you maintain your device in near mint condition. Mechanical devices on the other hand are purely market driven -- if something proved over time to be a reliable, useful device there's probably a market out there for it. Even if it's an antiquated 8-track player. At perhaps the simplest level remembering is reconstructing the past in the present. There is something terrible about time. Something truly horrifying about time lapse photography, imagine your life displayed in a time lapse film. I'm sure someone over at Flickr is doing it right now. One picture a day every day, same background, same arms length pose, put them together and slap them in a movie and you'd have the first film that might truly qualify as frightening. At some length my friend and I stopped collecting minutes and said goodbye. I wandered over to my truck and poked my fingers in a puddle to see if it was gasoline. It wasn't which was even more puzzling. Eventually I discovered that there was in fact gas leaking, as it turned out the fuel line had ruptured and the gas was slowly leaking out and running in a thin rivult through the stones and into the grass. After switching to the empty auxillary tank and deciding that that was problem for tomorrow I spent a little longer staring up at the sky in some vain attempt to spot the comet asldkfj, which is passing by at the moment.