the.com/exactness

The art of being right down to the decimal nobody asked for.

means The quality of being precise and accurate, down to the smallest measurable detail.

from From French 'exactitude' or directly from Latin 'exactus,' the past participle of 'exigere' — meaning to drive out, demand, or enforce, and by extension, to measure or weigh carefully. The root 'ex-' (out) plus 'agere' (to drive, to do) originally conjured the image of forcibly extracting a precise measurement, like a debt collector demanding every last coin owed. By the 17th century, English had borrowed 'exact' to describe things measured or stated with rigorous precision — the word still carries that faint echo of something being pressed or driven out to its true, undeniable value.

not precision
precision repeats, exactness is correct in truth
etymology
from latin exigere, to demand or weigh carefully
science reality
true exactness is rare, most data is approximate
social cost
being exact often reads as being annoying
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