diff --git a/Concurrent Systems/notes/5 - Software Transactional Memory.md b/Concurrent Systems/notes/5 - Software Transactional Memory.md
index 55e1b36..47bc50c 100644
--- a/Concurrent Systems/notes/5 - Software Transactional Memory.md	
+++ b/Concurrent Systems/notes/5 - Software Transactional Memory.md	
@@ -146,6 +146,8 @@ X.read_T(i) :=
 	∀ Y ∉ read_set(T) do
 		t_depend_T[Y] <- max{t_depend_T[Y], lc(XX).depend[Y]}
 		# aggiorno la dipendenza da Y della transazione
+		# perché solo per quelli NON nel read_set?
+		# perch´
 
 	return lc(XX).val