Back in the day, when someone reported a crime, we went along & took details. If we thought it was probably a crime we crimed it & it joined the statistic, if we didn’t think there had been a crime we ‘no crimed’ it & it didn’t make the stats.
Doubtless, there were officers who couldn’t be arsed to investigate & no crimed stuff but on the whole it was a common sense approach. Lost purses was an example, if there was no evidence to suggest that someone might have picket it from your pocket then the chances were that it fell out on the way home & was recorded as lost property rather than a theft.
Then someone thought that this wasn’t fair & lots of crimes were going unrecorded. The system was changed so that if someone thought they were subject of a crime then they were, unless there was pretty strong evidence to the contrary, so now we have the situation of instead of being under-reported, crime is now over-reported, there being countless incidents recorded as crimes which probably aren’t.
The problem is you get cases like this. Someone lost thousands of pounds’ worth of expensive koi carp. They were in the pond one day and not in the pond the next, ergo they must have been stolen. Suffolk police duly took the report and even appealed for witnesses ton track down the fate of the 27 hapless fish.
Following further investigation & observations the thief was found to be a heron taking its lunch. That’s a coincidence; I can’t count the amount of times I’ve seen a magpie rifling through the contents of an old lady’s purse over the years.