the.com/accuracy
being right about the wrong question, with admirable confidence and zero usefulness.
means the degree to which something matches the truth — how close your measurement, statement, or aim lands to the actual mark.
from From Latin accuratus, 'done with care,' the past participle of accurare — built from ad- ('to, toward') and cura ('care'). The same cura gives us 'cure,' 'curate,' and 'curious.' So at its heart accuracy isn't really about being correct — it's about taking pains, fussing over the details until the result fits reality. The carefulness came first; the rightness was the hoped-for reward.
- vs precision
- accuracy hits the target, precision hits the same spot twice
- GPS truth
- your phone is honest about how lost it is
- clock paradox
- a stopped clock is exactly right twice daily
- machine learning
- 99% accurate can still be uselessly biased
hubble space telescope — measures distances to galaxies within 3.26 million light-years with 0.05 arcsecond precision
cesium-133 atomic clock — defines the second to within 1 second error per 300 million years
gps system — provides location accuracy within 5 meters globally using 24+ satellites