I'm not thermal imaging any more, so after work was over we had time for badminton as normal.
After dinner I wasn't sure what to blip for the day. I dismantled dead carbon monoxide monitor. It died some time ago, it just bleeped whatever we did with it - even sticking it outside wouldn't stop it from bleeping so it's been sitting the office waiting to be recycled for a few days.
There is a theory that most poltergeists and a lot of ghost stories can be attributed to carbon monoxide poisoning, the symptoms it gives in a mild form are not dissimilar to what people feel when they claim to have seen ghosts. Once dreadful Victorian technology was phased out the incidents of ghosts has fallen.