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diff --git a/assignment7.mdwn b/assignment7.mdwn
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--- a/assignment7.mdwn
+++ b/assignment7.mdwn
@@ -10,9 +10,9 @@
 
 	Some advice:
 
-	*	You don't need to re-express the epistemic modality part of their semantics, just the treatment of indefinites. Though extra credit if you do the whole thing.
+	*	You don't need to re-express the epistemic modality part of their semantics, just their treatment of extensional predicate logic. Though extra credit if you want to do the whole thing.
 
-	*	You'll want to use the implementation of "implicitly represented" mutable variables that we discussed at the end of this week's meeting, or the "state monad" Chris presented, which is a simple version of the former. Conceptually, though, it's sometimes useful to switch back and forth between the "implicitly represented" model and the "explicitly represented" model.
+	*	You'll want to use the implementation of "implicitly represented" mutable variables that we discussed at the end of this week's meeting, or the "state monad" Chris presented, which is a simple version of the former.
 
 	*	Here are some [hints](/hints/assignment_7_hint_1).