dickwith factor
If you one fixes, places or installs something where other people can get to it, someone will eventually DICK WITH it.
A maintenance person installs a thermostat in a common area used by employee's. The thermostat has a locking cover placed over it. Someone gets the cover worked loose and broken so they can turn up the tempurature. So the maintenance person must figure in the Dickwith Factor, installing the thermostat by means that makes it way to hard to dick with. or installing it in a manner that being dicked with makes no difference.