In the UK they drank beer because the alcohol helped to sterilize it.
Actually, the water used was boiled during the beer making process and that's what sterilized it. The alcohol probably helped keep it that way.
When we walk through traffic and hear cars coming up on us, or know people's position in a room from the direction and magnitude of their voice. It's no surprise that someone lacking an important sense like sight will have much better developed echolocation ability.
That's hardly echo location. That's just stereo hearing. The best example I have of that is when I'm skiing - I process where people skiing behind me are by using 2 ears, so that I don't suddenly turn in front of them. No sound generation or echos required....
Spies should respect laws and constitutions, at the very least those of their own country. If they don't, everyone - including those who ordered the illegal spying - should be punished severely. We already know this is not happening.
Freedom is far more important than a spy's ability to do whatever they "need" to do.
But now the NSA and GCHQ have positioned themselves as apex predators at the top of the information food chain. They can spy on anyone, but no one is allowed to spy on them. There might be some king of notional "oversight" commitee for window dressing. So who might potentially be able to investigate the security services and hold them to account? That would be journalists and lawyers.....
He: Let's end it all, bequeathin' our brains to science. She: What?!? Science got enough trouble with their OWN brains. -- Walt Kelly