the.com/instrumentation

The art of measuring exactly how broken something is, in real time.

means The set of instruments, gauges, or sensors used to measure, monitor, and record how a system is performing.

from Traces back to Latin instrumentum, 'a tool or means of accomplishing something,' itself from instruere, 'to build, equip, or arrange' — a combination of in- ('upon') and struere ('to pile up, build'), the same root that gives us 'structure' and 'construct.' The '-ation' ending turns the tool into the whole practice of outfitting something with tools — so instrumentation is, at its root, the art of equipping a thing so it can be watched.

origin
from Latin instrumentum, literally a tool for building
irony
adding sensors can itself change the thing measured
software use
code that watches code, usually when it fails
golden rule
you can't fix what you never measured
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