diff --git a/src/memory/ranking.ts b/src/memory/ranking.ts
index 55f779b..dedfee0 100644
--- a/src/memory/ranking.ts
+++ b/src/memory/ranking.ts
@@ -43,7 +43,7 @@ export function calculateEpisodeContextScore(episode: Episode): number {
 		decayRate: episode.decay_rate,
 	});
 
-	return weightedAverage2(signals.durability, signals.recency, 0.6, 0.4);
+	return signals.durability * 0.6 + signals.recency * 0.4;
 }
 
 export function shouldIncludeEpisodeInContext(episode: Episode): boolean {
@@ -75,10 +75,6 @@ function weightedAverage(a: number, b: number, c: number, aWeight: number, bWeig
 	return a * aWeight + b * bWeight + c * cWeight;
 }
 
-function weightedAverage2(a: number, b: number, aWeight: number, bWeight: number): number {
-	return a * aWeight + b * bWeight;
-}
-
 function exponentialDecay(ageHours: number, halfLifeHours: number, decayRate: number): number {
 	if (!Number.isFinite(ageHours) || ageHours < 0) return 1;
 	return Math.exp(-((ageHours / halfLifeHours) * decayRate));