As a result of last week's advertisement from Heddlu Gogledd Cymru, I now know that a Forensic Collision Investigator is a "Ymchwilydd Gwthdrawiadau". I also learnt ACPO, the chief constables' organisation, is translated as CPSH. It took me a little while to work that one out.
Reading through the Welsh text of the advertisement, I discovered that the successful applicant would need a clear understanding of egwyddorion mathemategol. That seems a perfectly reasonable professional requirement: the appointee will have to investigate and report on many different types of road traffic collision. But I was baffled by the English text. It called for the investigation of collisions "by application of mathematical principals". Why on earth should highly numerate college heads be involved?