diff --git a/observ/object_proxy.py b/observ/object_proxy.py
index 83de537..886c70c 100644
--- a/observ/object_proxy.py
+++ b/observ/object_proxy.py
@@ -51,7 +51,6 @@ def __setattr__(self, name, value):
                 # the set attr is not stateful (e.g. someone
                 # is attaching a bound method)
                 # so no need to track this modification
-                # TODO: we could cache this?
                 return retval
 
         new_value = getattr(target, name, None)
@@ -87,8 +86,8 @@ def passthrough(method):
     def trap(self, *args, **kwargs):
         fn = getattr(self.__target__, method, None)
         if fn is None:
-            # TODO: we could cache this
-            # but it is possible a class is dynamically modified later
+            # we don't cache this
+            # since it is possible a class is dynamically modified later
             # invalidating the cached result...
             raise TypeError(f"object of type '{type(self)}' has no {method}")
         return fn(*args, **kwargs)