diff --git a/crates/mind-body/src/tempo/sim.rs b/crates/mind-body/src/tempo/sim.rs
index 5e0a8ed..000cd2a 100644
--- a/crates/mind-body/src/tempo/sim.rs
+++ b/crates/mind-body/src/tempo/sim.rs
@@ -136,10 +136,11 @@ fn run(scenario: &Scenario, sensor: Sensor, gains: &Gains, seed: u64) -> Outcome
             window += 1;
         }
         let in_window = (now - (resets - WINDOW_MS)) as f64 / HOUR_MS;
-        if let Some((from, to, amount)) = scenario.burst {
-            if in_window >= from && in_window < to {
-                used += amount * STEP_MS as f64 / HOUR_MS / (to - from);
-            }
+        if let Some((from, to, amount)) = scenario.burst
+            && in_window >= from
+            && in_window < to
+        {
+            used += amount * STEP_MS as f64 / HOUR_MS / (to - from);
         }
         let gap = scenario.gap.is_some_and(|(from, to)| in_window >= from && in_window < to);
         if sensor == Sensor::Poll && !gap && (now - W0) % POLL_MS == 0 {
diff --git a/crates/mind-body/tests/public_surface.txt b/crates/mind-body/tests/public_surface.txt
index 02f8d4d..26435a4 100644
--- a/crates/mind-body/tests/public_surface.txt
+++ b/crates/mind-body/tests/public_surface.txt
@@ -263,9 +263,16 @@ mind_body::self_run::inbox: fn render (briefs : & [Brief] , plan : & str) -> Str
 mind_body::self_run::inbox: fn resolving_sentence (id : & str) -> String
 mind_body::self_run::inbox: struct Brief # [derive (Clone , Debug , PartialEq , Eq)] pub-fields[id: String, campaign: String, repo: String, item: String, ordinal: u64]
 mind_body::tempo: const DEFAULT_BEAT_S : u32
+mind_body::tempo: const FALLBACK_MAX_S : u32
+mind_body::tempo: const FALLBACK_MIN_S : u32
+mind_body::tempo: const GAINS : Gains
 mind_body::tempo: const LOG_BOUND_ORDERS : f64
+mind_body::tempo: fn fallback_beat (state : & mut Fallback , reading : Option < & Reading > , now_ms : i64 , target_permille : u32 , voted : bool ,) -> u32
 mind_body::tempo: fn pick (rows : & [Standing] , beat_s : u32) -> Option < usize >
 mind_body::tempo: fn score (standing : & Standing , beat_s : u32) -> f64
 mind_body::tempo: fn tally (votes : & [Option < u32 >]) -> u32
 mind_body::tempo: fn urgency_permille (standing : & Standing) -> u16
+mind_body::tempo: struct Fallback # [derive (Clone , Debug , Default , PartialEq)] pub-fields[integral: f64, last_used_permille: u32, last_observed_at_ms: i64, last_now_ms: i64, window_resets_at_ms: i64, rate_per_h: f64]
+mind_body::tempo: struct Gains # [derive (Clone , Copy , Debug , PartialEq)] pub-fields[kp: f64, ki: f64, kd: f64]
+mind_body::tempo: struct Reading # [derive (Clone , Copy , Debug , PartialEq , Eq)] pub-fields[used_permille: u32, observed_at_ms: i64, resets_at_ms: i64]
 mind_body::tempo: struct Standing # [derive (Clone , Debug , PartialEq , Eq)] pub-fields[slug: String, eligible: bool, waited_s: Option < u64 >, last_turn_ms: Option < i64 >, self_permille: u16, topic_permille: u16, addressed_by_member: bool]