Since I'm already up early in the morning and go home late in the evening, I hardly have enought time to check the stuff inside my backpack and separate the garbage from the non-garbage. This results to the accumulation of unnecessary stuff overtime, which is not exactly what anybody would like to have.
I'll just wake up one day, finding the urge to open my bag, and see it filled with dozens upon dozens of paper--pampleths, flyers, bond papers, yellow pads, and scratch papers. All these are combined in one bag. Imagine how chaotic it will be. So what I do, to speed up things, is to throw away as much paper as possible. However, this also has its consequences: I might throw an important document by accident, which has certainly happened over the past few years.
Now, if I only had an expandable filer for all of my papers, things would have probably been a lot easier. With a filer, I could easily sort out my papers from the very beginning. I wouldn't have to deal with the mess I accumulated if they were seperated into different containers beforehand. My backpack wouldn't be that heavy as well, since the load of papers will be stored in the handcarried filer.
Ah well, but point is I don't have a filer, so I end up stuck with tons of garbage inside the bag. I guess I'll just have to sort them out once again one of these days.