diff --git a/packages/squiggle-lang/__tests__/Reducer/Reducer_Module/Reducer_Module_defineFFI_test.res b/packages/squiggle-lang/__tests__/Reducer/Reducer_Module/Reducer_Module_defineFFI_test.res
index 1cc238a9..7b6a5612 100644
--- a/packages/squiggle-lang/__tests__/Reducer/Reducer_Module/Reducer_Module_defineFFI_test.res
+++ b/packages/squiggle-lang/__tests__/Reducer/Reducer_Module/Reducer_Module_defineFFI_test.res
@@ -12,7 +12,10 @@ open Expect
 // ----------------------
 
 module FooImplementation = {
-  let fooNumber = 0.0
+  // As this is a Rescript module, functions can use other functions in this module 
+  // and in other stdLib modules implemented this way. 
+  // Embedding function definitions in to switch statements is a bad practice 
+  // - to reduce line count or to   let fooNumber = 0.0
   let fooString = "Foo String"
   let fooBool = true
   let makeFoo = (a: string, b: string, _environment): string => `I am ${a}-foo and I am ${b}-foo`