That's just it though -- they obviously don't think liquids are potentially dangerous. It's just a sort of cargo cult practice at this point, completely dissociated from the original reason & intent.
Same argument goes for anything verboten, really. If the item actually was dangerous and you actually cared about people not having it, you wouldn't just make them throw it away if and when you caught them with it -- you'd have a real disincentive, like a fine (a good example is fresh fruit & Australian quarantine laws).
Same argument goes for anything verboten, really. If the item actually was dangerous and you actually cared about people not having it, you wouldn't just make them throw it away if and when you caught them with it -- you'd have a real disincentive, like a fine (a good example is fresh fruit & Australian quarantine laws).