In my senior year of high school I wanted to know how much space each student had in the system so I made a new folder, then another new folder and put the first folder inside. Then I made a new folder and put the other one inside. So each time I did this, the folder grew in size until it would take a good half hour to do it due to how great the size got. What I didn’t know was that all computers shared the same hard drive and eventually I shut down the school network because of this. Computer classes were cancelled. Teachers couldn’t update scores for their students. Eventually the entire school failed to function and all students could do was play SNES ROMs because of a shared SNES ROM folder I added to the school network. I took down the system.