I just looked it up it was the first episode after she created her "swiss army sonic":Tsyroc wrote: ↑2018-10-24 07:35amThe knife comment, "Only an idiot carries a knife.", (was that in the first episode?) bugged me because I pretty much always carry a knife and I thought it might be pandering to the government in the UK but later on a character was saved by someone who was carrying a knife. So that pretty much nullified my annoyance with the knife comment, for the most part. "Idiot" seems rather harsh though.
“Sonic screwdriver – well I say screwdriver, but it’s a bit more multi-purpose than that. Scanner, diagnostics… tin opener. More of a… sonic Swiss army knife. Only without the knife. Only idiots carry knives.”
It is probably a nod to the recent spate of knife crimes in London. And I don't personally object but that's a cultural thing, (and I actually carry tiny penknife most places). I think though she declaims, Thirteen clearly doesn't have a trouble with people using them to rescue people in this episode but carrying them on the regular with the intent of stabbing people is clearly a no-no. (Not that you do of course)
The gun thing episode was amusing, if a little forced. You could as easily take 'don't use guns that you aren't trained in using and are too small to put down what you are shooting at permanently' from Ray's problems.