@GottaLaff Pretty good analogy. My experience working in a TS/SCI/TK/B environment may also help. Has a highly classified printout on my desk. Left the room for potty break. The door to the room has no security features. Someone came into my room and placed the printout in my briefcase. For some reason, I checked my briefcase before I left for home and almost had a COW! Just because that room was my office did not mean that someone else could not get in.

At least the location of the documents found in the Biden search were in facilities that probably had government permission to hold classified documents. The documents were probably also not stored in cardboard boxes.