diff --git a/readme.txt b/readme.txt
index 11bba1b..6ea6e14 100644
--- a/readme.txt
+++ b/readme.txt
@@ -25,7 +25,8 @@ there are also pre-processor macros:
 - :<misc>, for adding comments (lines removed in pre-processing)
 you may notice that the language looks like a lisp/scheme and the preprocessor keywords
 are similar to m4/cpp. I'm a fan of homoiconicity, and this provides both a familiar and
-delightfully simple syntax.
+delightfully simple syntax. note that it doesn't actually function like a lisp under the
+hood: there's no cons, for instance.
 
 examples: