# r3-b1-09

**Claim (as registered):** The rate of exact-precision dating (as opposed to a date range, or no date at all) is source-specific and spans a wide but stable range across already-landed catalogue sources; no single source's rate is a universal constant, but each source's OWN rate is stable (within a +/-15 percentage-point band) as that source grows.

**Proposed mechanism:** Exact-dating rate is proposed to reflect each source's own cataloguing tradition and instrument, not source size -- a clean 'bigger corpus = less precise dating' relationship was explicitly checked for and rejected (the two largest sources checked are both large AND high-exact-rate).

**Scope:** This conjecture concerns the manuscript-catalogue source(s) named below only -- it does not involve NAMAMI or India data at all, and is not decided by NAMAMI's India-state holdout in any way (no India state's landing can confirm or refute it). It is decided only by future growth of, or new landings to, the specific source(s) named below; no such test has run yet. Specifically: eight already-landed non-India sources (a Hebrew-manuscript catalogue, a Swedish archival fragment collection, a Sephardi-manuscript database, a Perso-Arabic catalogue, an Islamic-manuscript union catalogue, a Christian-Oriental catalogue, a large Western-manuscript aggregator, and Korea's national catalogue).

**Training-side evidence:** Exact-precision rates: 10.76%, 2.46%, 72.53% (a dated-manuscript-selected corpus by construction, flagged as a scope caveat), 23.17%, 25.98%, 11.42%, 44.99%, 56.47%.

**Holdout test and outcome:** No holdout test has been run for this conjecture. Evaluate the rival mechanisms against the training evidence alone.

**Status:** Not yet tested; decided only by future increments to these eight sources.
