arte factum

The word artifact (or artefact in British English) was coined from Latin arte ('by skill, by art') and factum ('made, done'). It appeared in English in 1821, in archaeological usage, to distinguish objects made by human hands from natural formations. The question it answered was basic: is this a tool or a rock? The word drew a line between culture and nature.

In archaeology, artifacts are the primary evidence of past human activity. A potsherd, a flint blade, a bronze pin — each is an artifact. The discipline classifies artifacts by type, material, date, and context. An artifact without its context — dug up by a looter, sold at auction, displayed without provenance — loses most of its informational value. The object is interesting. Its location in the ground was the evidence.

In medicine, 'artifact' means something different: a distortion in data caused by the measurement process, not by the phenomenon being measured. A smear on an X-ray. A spike in an EEG caused by a loose electrode. Medical artifacts are noise, not signal. The word that meant 'skillfully made' came to mean 'accidentally produced.'

In software, 'artifacts' are the outputs of a build process — compiled code, packaged applications, documentation. The word has traveled from archaeology to medicine to technology, always naming the same basic thing: something produced by a process, whether that process is ancient pottery-making, a medical scanner, or a software pipeline.