Re: Pity the poor civil servant
"Perhaps that attitude is why she's not getting any good advice on the topic and is having to make it all up as she goes along."
I think it was working the other way round. She'd had a meeting where hashing images was explained to her and this was how she remembered it. I suppose she'd have taken offence if whoever briefed her asked her then & there to explain it in her own words and then corrected her. It would probably have been a far from brief briefing and she'd probably have still mangled it the next day anyway.