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Comment Naval NDB (Score 1) 133

This old but effective technology has been discontinued for sea navigation around 1990 to be replaced by Loran-C and GPS. Although not so accurate, it was very reliable, and cheap to mantain and use. LF beacons still survive for aerial navigation, although the transmitter number has been significantly reduced recently. It wouldn't be that bad to have them ready to be switched on when needed.

Comment Thi is a troublesome question. (Score 1) 204

If we are living in a simulation, many questions come to the mind...

  • does the main computer run linux ? Or Windows ? For sure if it runs Inferno we are in trouble!
  • is the system a single CPU or a Beowulf cluster ?
  • What is the kW rating of the UPS ?
  • Do they have a fool-proof backup and restore policy ?
  • Is there a way to observe the crontab ? It would be useful to know when the next reboot has been scheduled

etc...

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