diff --git a/README.ja.md b/README.ja.md
index 3325945..f9c5fdb 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -111,7 +111,9 @@ lon/lat から始まり、PROJ には別の天体への変換が無く、同梱
 - 外した行は `onExcluded` に理由 `Not on the Earth (celestial body: <名前>)` で渡します
   （京都の範囲・`area` なしでは 2,046 行。結果は 2,213 行から 167 行になります）。
 - 残したいとき（一覧を見るときなど）は `includeOtherCelestialBodies: true` を渡します。
-  そうして得た行を `transformLonLatArrayToProjected` にまとめて渡さないでください。
+  そうして得た行を、`transformLonLatArrayToProjected` にも、`createCandidateTransformer` を通して
+  Teiresias の `estimateCrs` にも、まとめて渡さないでください。`estimateCrs` は渡された候補を全部変換
+  するので、実行時が応答しなくなることがあり、変換に失敗した候補があれば推定全体が失敗になります。
 
 ### 同梱の proj-wasm で書き出せない行
 
diff --git a/README.md b/README.md
index 43e39f3..faa47a2 100644
--- a/README.md
+++ b/README.md
@@ -117,7 +117,9 @@ No PROJ object is created for the rows left out.
   `Not on the Earth (celestial body: <name>)` (for a Kyoto extent without `area`: 2,046 rows, and
   the result goes from 2,213 to 167 rows).
 - Pass `includeOtherCelestialBodies: true` to keep them (for example to list them). Do not pass such
-  rows to `transformLonLatArrayToProjected` in bulk.
+  rows in bulk to `transformLonLatArrayToProjected`, nor through `createCandidateTransformer` to the
+  `estimateCrs` of Teiresias: `estimateCrs` transforms every candidate it is given, so the runtime can
+  stop answering, and a candidate whose transformation fails makes the whole estimate fail.
 
 ### Rows the bundled proj-wasm cannot export
 
diff --git a/dist/proj-wasm-crs.d.ts b/dist/proj-wasm-crs.d.ts
index a8024ee..83119a6 100644
--- a/dist/proj-wasm-crs.d.ts
+++ b/dist/proj-wasm-crs.d.ts
@@ -33,6 +33,10 @@ export interface ListProjectedCrsFromProjWasmOptions {
      * exceptions this raises pile up until the runtime stops answering. The test uses the celestial
      * body proj.db gives for the CRS (`ellipsoid.celestial_body_auth_name/code` -> `celestial_body.name`,
      * reported as `celestialBodyName`), so no PROJ object is created for the rows left out.
+     *
+     * When you keep them, do not pass such rows in bulk to `transformLonLatArrayToProjected`, nor
+     * through `createCandidateTransformer` to the `estimateCrs` of Teiresias (`estimateCrs` transforms
+     * every candidate it is given).
      */
     includeOtherCelestialBodies?: boolean;
     onshoreOnly?: boolean;
diff --git a/src/proj-wasm-crs.ts b/src/proj-wasm-crs.ts
index e0aa80d..313fa57 100644
--- a/src/proj-wasm-crs.ts
+++ b/src/proj-wasm-crs.ts
@@ -38,6 +38,10 @@ export interface ListProjectedCrsFromProjWasmOptions {
    * exceptions this raises pile up until the runtime stops answering. The test uses the celestial
    * body proj.db gives for the CRS (`ellipsoid.celestial_body_auth_name/code` -> `celestial_body.name`,
    * reported as `celestialBodyName`), so no PROJ object is created for the rows left out.
+   *
+   * When you keep them, do not pass such rows in bulk to `transformLonLatArrayToProjected`, nor
+   * through `createCandidateTransformer` to the `estimateCrs` of Teiresias (`estimateCrs` transforms
+   * every candidate it is given).
    */
   includeOtherCelestialBodies?: boolean;
   onshoreOnly?: boolean;