diff --git a/4-3-NOSQL.md b/4-3-NOSQL.md
index a04b10d..04c1e8a 100644
--- a/4-3-NOSQL.md
+++ b/4-3-NOSQL.md
@@ -270,7 +270,8 @@
 - Consistency level: how recent and in-sync all replicas of a row of data are.
   It prefers availability over consistency, and let you tune how consistent it
   would be, replica consistency levels:
-    - ANY: one replica node, including handoff
+    - ANY: one replica node, including handoff need to reply, in order for write
+      to success
     - ONE: one node
     - QUORUM: N / 2 + 1
         - `LOCAL_QUORUM`: local datacenter