diff --git a/backend/fluksio/flow/nodes/wren.py b/backend/fluksio/flow/nodes/wren.py
index 7b4a60a..f63e8d8 100644
--- a/backend/fluksio/flow/nodes/wren.py
+++ b/backend/fluksio/flow/nodes/wren.py
@@ -9,6 +9,7 @@ allowlist: the model can reach nothing that is not wired to the node.
 
 from __future__ import annotations
 
+import re
 import time
 from collections.abc import Iterable
 from typing import Any
@@ -120,7 +121,8 @@ _SAID = {
 #: What every area held in training: a light, and in the living room, which
 #: always existed, media and heating besides. A house missing them reads as
 #: unfamiliar and the confidence drops with it, so they are filled in; a call
-#: on one that nothing is wired to is reported and not applied.
+#: on one that nothing is wired to is reported and not applied. Every area is
+#: shown, wired or not, or "the bathroom light" lands on a light that is.
 _TRAINED = {"living room": ("light", "media", "heat")}
 
 
@@ -186,6 +188,15 @@ def _said(call: Any, area: str) -> str:
     return f"{area} {said}"
 
 
+def _plain(command: str) -> str:
+    """The command as the model was trained on it: lower case, no sentence marks.
+
+    A transcript's "Turn on the kitchen light." reads less sure than the same
+    words plain, 0.80 against 0.99 with every area shown.
+    """
+    return re.sub(r"[.,!?;:]+(?=\s|$)", "", command).strip().lower()
+
+
 def _text(call: Any) -> str:
     """The call as the chat shows it, less the device it names."""
     args = ", ".join(f"{k}={v}" for k, v in call.args.items() if k != "id")
@@ -311,8 +322,6 @@ class WrenNode(Node):
         areas: dict[str, list[Any]] = {}
         for area in wren.AREAS:
             wired = {kind for (a, kind) in self.devices if a == area}
-            if not wired and area not in _TRAINED:
-                continue
             kinds = wired | set(_TRAINED.get(area, ("light",)))
             areas[area] = []
             for kind in (k for k in wren.KINDS if k in kinds):
@@ -354,7 +363,7 @@ class WrenNode(Node):
         # small. Scoped to the call, so numpy elsewhere in the process keeps
         # its threads.
         with threadpool_limits(1):
-            calls, confidence = wren.act(prompt, house)
+            calls, confidence = wren.act(_plain(prompt), house)
         confidence = round(float(confidence), 3)
         write = self.cfg.apply and confidence >= self.cfg.min_confidence
         writes: dict[str, Any] = {}
diff --git a/backend/tests/flow/test_wren.py b/backend/tests/flow/test_wren.py
index 87a98e0..a96fde7 100644
--- a/backend/tests/flow/test_wren.py
+++ b/backend/tests/flow/test_wren.py
@@ -11,7 +11,7 @@ import pytest
 
 from fluksio.flow.messages import DType, MessageSpec
 from fluksio.flow.nodes.base import Node
-from fluksio.flow.nodes.wren import CANT, WrenNode, _value
+from fluksio.flow.nodes.wren import CANT, WrenNode, _plain, _value
 from fluksio.flow.pipeline import Pipeline
 
 
@@ -72,6 +72,11 @@ def test_only_the_prompt_wakes_it(fake_wren):
     }
 
 
+def test_the_model_reads_the_command_plain():
+    assert _plain("Turn on the kitchen light.") == "turn on the kitchen light"
+    assert _plain("Heat it to 22.5, please!") == "heat it to 22.5 please"
+
+
 @pytest.mark.parametrize(
     ("tool", "args", "dtype", "value"),
     [
@@ -114,6 +119,8 @@ def test_applied_calls_reach_their_targets(fake_wren):
         ("house.living_room_setpoint", True),
         ("", False),
     ]
+    # Areas nothing is wired to are shown too, so a call can name them.
+    assert set(fake_wren.houses[0].areas) == set(fake_wren.AREAS)
     living = fake_wren.houses[0].areas["living room"]
     assert [(d.kind, d.state) for d in living] == [
         ("light", "off"),
diff --git a/docs/reference/node-types.md b/docs/reference/node-types.md
index a48c3bc..ed870e6 100644
--- a/docs/reference/node-types.md
+++ b/docs/reference/node-types.md
@@ -406,8 +406,10 @@ A call with a delay ("in 10m") is held by the engine's work queue, like the
 Debounce node's second value: it survives a restart where the queue is in
 Redis, and not otherwise.
 
-The node adds default devices to the model's view for missing expected devices.
-They are reported but cannot receive writes unless wired.
+The model sees every area, wired or not, each with at least a light, so "the
+bathroom light" is not taken for a light that is wired elsewhere. Such a call
+is reported but not applied, and goes on to `unhandled`. The command is read
+in lower case without sentence marks, as the model was trained.
 
 !!! note "What the current model cannot do"