I'm interested in the idea that turning on your laptop somehow "proves" that the laptop isn't just a box for explosives. Presumably the "on" test is considered

I'm interested in the idea that turning on your laptop somehow "proves" that the laptop isn't just a box for explosives. Presumably the "on" test is considered sufficient both for a mid-2000s brick of a laptop, and a thin modern laptop like a 2016 MacBook. But you could pack a MacBook into a bulky laptop's body and have plenty of room to spare.