A Canadian Space Agency project about detecting life on Mars. My contribution was minuscule, as a young naive grad student, but I hope it gets built on over time.

https://falseknees.com/comics/268.html

Who throws out a nearly full bag of chips?! They’re like 6$ here in Canada!

I can’t remember if it’s mentioned in the books, but I think the idea is that Muggle technology stops working in the presence of magic. Guns would jam, electronics would brick, etc.

Granted, this raises the question of where do you draw the line? For example, the magical world has countless exploding substances. What if they took some, stuffed it down a long metal tube, insterted a small metal object in front of it, then set fire to the explosive stuff from the back end? That’s basically a gun or cannon, and it’s hard to argue that it’s technologically complex.