re: What fact is common knowledge in your field but almost unknown to the rest of population?

You stole this topic from Reddit. Including your fact you listed.

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To prevent use by hostile actors, Civilian GPS receivers by law are programmed to be functionally disabled at speeds above 1,000 knots and / or altitudes exceeding 60,000 feet above mean sea level, preventing accurate missile guidance.

Besides position and navigation applications, among other things GPS timing signals sync cellular and internet networks, TV broadcast signals, and banking / financial system transactions, without which they'd all crash.

Precise Time Transfer is one of GPS's attributes invisible to most users. The original design spec was 1 nanosecond, practically it achieves at best 10 nanoseconds using specialized techniques.

All electronic based navigation systems essentially exploit the property of time.

Sometimes cold water is on the left, and occasionally shite does run uphill.

Water cannot be compressed and vinegar is a by product of the growth of yeast.

Rhythm and beat are two completely different things. A piece of music doesn’t have a good “beat”.

Order of operations during a contingency.

In fact most in my field fail at it.

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Louisiana has the highest auto insurance rates in the nation

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NEVER vote for the incumbent for insurance commissioner. He is part of the problem.

Nuclear reactor cannot explode like an atomic bomb

Electricity does not run "through" a wire.


Solar panels will not power your home in the event of a power outage.

Insurance is not a "scam". Most large carriers run a combined ratio in the mid 90's.

The average American is just too stupid/lazy to read their policy and understand what is covered, and what isn't.