A lot of art depicting Sergeant Detritus has him with just like a larger version of the standard copper's breastplate, which never quite seemed right to me cause it says in Men At Arms they've adapted an old piece of war elephant's armour for him and having been to the Leeds Royal Armouries a fair bit I always pictured him wearing something more like this:

Someone just told me that the Trolls in Discworld count in base four and then Detritus and Cuddy figure out how to do maths in binary, which completely blew me away because up until this point I was assuming that this passage was simply mocking the french language:

I just want to give a shout-out to Sergeant Detritus in Terry Pratchett’s “Discworld” books. As someone who is basically pretty darn smart but has wildly varying cognitive function depending on things like ME/CFS brainfog, seizures that leave me post-ictal (especially if I have lots), probable-ADHD concentration problems, etc., having a character whose own intellectual ability is also really variable and contingent is incredibly relatable and validating.

Detritus was particularly good when it came to asking questions. He had three basic ones. They were the direct ('Did you do it?'), the persistent ('Are you sure it wasn't you that done it?'), and the subtle ('It was you what done it, wasn't it?'). Although they were not the most cunning questions ever devised, Detritus' talent was to go on patiently asking them for hours on end, until he got the right answer, which was generally something like: 'Yes! Yes! I did it! I did it! Now please tell me what it was I did!'