How coding in Python is bad for you

Chris Angelico rosuav at
Tue Jan 24 06:58:55 EST 2017

On Tue, Jan 24, 2017 at 10:52 PM, BartC <bc at> wrote:
>> Remember: If you have only one clock, it might be right and it might
>> be wrong, but it's consistent. If you have two clocks and they
>> disagree, you have no clue what the time is.
> I've actually got three wall clocks. Usually only one will disagree with the
> other two, meaning it needs a new battery. But don't they use such systems
> in avionics?

See what Steve said about 1 or 3 but never 2. Triple redundancy gives
you a chance to figure out that two of them agree.


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