diff --git a/MEV_and_trading/lending/README.md b/MEV_and_trading/lending/README.md
index 6952bb2..656d997 100644
--- a/MEV_and_trading/lending/README.md
+++ b/MEV_and_trading/lending/README.md
@@ -2,6 +2,15 @@
 
 <br>
 
+### tl; dr
+
+<br>
+
+* alice and bob deposit funds into a lending contract (e.g., Aave, Maker, Compound). while bob leaves his original collateral locked in the protocol, he can withdraw ~50% or more (depending on the protocol and asset) at some algorithmic rate that gets paid to alice (for providing the funds). 
+* bob can then create a short position, reinvest for a levered long position, or withdraw money (without selling the underlying and being taxed). alice, on the other hand, generates a return on her capital.
+
+<br>
+
 ### in this dir
 
 <br>