diff --git a/MEV_on_Arbitrum/fair_ordering_sequencing.md b/MEV_on_Arbitrum/fair_ordering_sequencing.md
index ad66eba..96d1fc7 100644
--- a/MEV_on_Arbitrum/fair_ordering_sequencing.md
+++ b/MEV_on_Arbitrum/fair_ordering_sequencing.md
@@ -1 +1,8 @@
 ## fair ordering sequencing
+
+<br>
+
+### tl; dr
+
+* need a bond that is slashable and a fair ordring protocol (picking a fair sequence of events to publish)
+* users pay for the right to extract MEV over a period through the opportunity cost per block times the number of blocks staked