Why do we keep what we do? (reflections on storage)

While going through some old files today, I found this drawing. What on earth made me save it? It’s a laptop sketched on the back of an old telephone bill!
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While just a scribble, it was used in this work. In other words, the drawing had found its place, so why cling to the hardcopy? Did I keep it because it was something “touchable” and not digital? Or cringe of all cringes, did I think of it as an “original”? Or maybe I just couldn’t make a decision about the object’s status. Storage reveals so much about ourselves, not just the things we keep, but also the things we “neglect” to throw away.