f specify what "sane" means

Author: TheBlueMatt

lightning/src/routing/scoring.rs

@@ -758,10 +758,10 @@ impl<L: Deref<Target = u64>, BRT: Deref<Target = HistoricalBucketRangeTracker>,
 
 		if params.historical_liquidity_penalty_multiplier_msat != 0 ||
 		   params.historical_liquidity_penalty_amount_multiplier_msat != 0 {
-			// If historical penalties are enabled, calculate the penalty by walking the (sane) set
-			// of historical liquidity bucket (min, max) combinations and, for each, calculate the
-			// probability of success given our payment amount, then total the weighted average
-			// probability of success.
+			// If historical penalties are enabled, calculate the penalty by walking the set of
+			// historical liquidity bucket (min, max) combinations (where the min is less than the
+			// max) and, for each, calculate the probability of success given our payment amount,
+			// then total the weighted average probability of success.
 			//
 			// We use a sliding scale to decide which value will be used for a given bucket - the
 			// first bucket receives zero (ie the lower-bound of the bucket), the last bucket