What is the difference between an observation and ground truth?

Approved Context Layer records are ground truth. Model outputs, rankings and citations are observations about external behavior.

An observation can tell you where to look next and can raise the priority of a remediation. It can never overwrite an approved source. A model answer that contradicts your Context Layer is a signal that something needs attention, not evidence that your records are wrong.

Getting this backwards degrades the Context Layer into whatever the open web already believed, which is the problem Senso exists to solve.