You can fly over the top of Chicago at 10,000 ft without a 'clearance' and not speak to anyone let alone listen to a control frequency. Yet again Australians' thinking they are the best at everything and trying to preach it to the world. It's not only ludicrous it's embarrassing. The nanny state has brainwashed every Australian into thinking a rule is required to scratch your arse, after paying the appropriate fee to do so.