A certificate tells you someone finished a course. It tells you nothing about whether the work is there. The distinction is small in wording and enormous in consequence for every employer who relies on it.
Completion certificates have a specific, limited job: they confirm attendance. They do not assess output. They do not measure standard. They confirm that someone was present and did not quit before the end.
The problem is not the certificate itself — it is what happens when employers use it as a proxy for capability. When a certificate from a twelve-week bootcamp is treated as evidence of job-readiness, the burden of validation falls entirely on the hiring interview. That interview is expensive, inconsistent, and widely understood to be poor at distinguishing candidates.
Evidentize exists for a simple reason: real evidence of work looks different from proof of attendance. A verdict from a calibrated human assessment tells an employer something a certificate never can — that this person, under defined conditions, produced work that met a defined standard.
The two things serve different purposes. The problem is that for too long, one has been asked to do the job of both.