diff --git a/doc/todo/support_disabling_verification_of_transfer_over_p2p_protocol.mdwn b/doc/todo/support_disabling_verification_of_transfer_over_p2p_protocol.mdwn
index 9fbf69216a..9d59bef8da 100644
--- a/doc/todo/support_disabling_verification_of_transfer_over_p2p_protocol.mdwn
+++ b/doc/todo/support_disabling_verification_of_transfer_over_p2p_protocol.mdwn
@@ -14,3 +14,9 @@ as it was transferred, and "0" when it did.
 
 My first attempt to implement this failed miserably due to a Free monad
 type check problem I could not see a way around.
+
+Also, resumes make this difficult. What if a file starts to be transferred,
+gets changed while it's transferred so some bad bytes are sent, then the
+transfer is interrupted, and later is resumed from a different remote
+that has the correct content. How can it tell that the bad data was sent
+in this case?