diff --git a/src/engine/index.ts b/src/engine/index.ts
index ea713b5..325368b 100644
--- a/src/engine/index.ts
+++ b/src/engine/index.ts
@@ -145,7 +145,7 @@ export class SumEngine {
         } else if (e instanceof EvalError) {
           // Expected evaluation failure; remain silent
         } else {
-          // Surface unexpected bugs/BigInt errors/RangeErrors and log them
+          // Capture unexpected execution anomalies like BigInt or Range errors
           lineError = e instanceof Error ? e.message : String(e);
           console.warn("evaluate failed:", e);
         }