And you know what? Smoke signals and Morse code by tapping a hole in a can with some junk burning inside, are still as perfectly viable for a line-of-sight information transmission, as they were centuries ago. And way less expensive than pigeons, but then, people stopped breeding pigeons for fun circa 1960's - and there is nothing (nothing) which could prevent that custom from being restarted.
Prohibition created an entire industry of moonshine.
Censorship is creating an entire industry of bypassing it.
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