Among the first things pilots learn is what to do if something goes wrong. Instrument pilots get to learn what to do when instruments or the systems powering them fail and how to get back on the ground with what’s left. Back in the days when each instrument was a separate, physical thing instead of a software construct presenting symbols or alphanumeric data, their presentation was relatively well known and predictable. These days, however, those same instruments often have been replaced with what is essentially a computer screen.
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