I've been using the Super Organised Method and didn't know it. Though not with papers (so much). I use it with clothes, books, and digital content like apps on my phone.
To most of us, it may seem obvious that piling is
dysfunctional while filing is the act of a serious
professional. Yet when researchers from the office
design company Herman Miller looked at high-performing
office workers, they found that they tended to be
pilers. They let documents accumulate on their desks,
used their physical presence as a reminder to do work,
and relied on subtle cues — physical alignment, dog-
ears, or a stray Post-it note — to orient themselves.
Removing the cognitive load of precise classification, using the physical space for physical items or multi-dimensional tag system for digital items, allows you to focus on the work itself and not on the items that make up the work.
If you really need a filing system, hire a librarian.