I think it's the familiarity which is actually hurting you there. If you come up to a device which as far as you know is alien technology, you don't know if it

I think it's the familiarity which is actually hurting you there. If you come up to a device which as far as you know is alien technology, you don't know if it should behave like a Mac or an iPhone, so the thing that works on an iPhone feels like more of a valid possibility. If you come up to it knowing exactly what kind of device is and that it isn't at all like an iPhone, it doesn't. Because any hope of guessing it comes from knowing that phones do that, so the less like a phone you know it to be, the less likely you are to try that. Notice that even on phones it isn't intuitive if you've never done it before. If you tap the lock screen on Android it shows a message that says "Swipe up to unlock" -- because how else would you know that for the first time? But at least there it serves a purpose.