diff --git a/IoT/Intro-IoT.adoc b/IoT/Intro-IoT.adoc
index 49a2fa6..2184a2f 100644
--- a/IoT/Intro-IoT.adoc
+++ b/IoT/Intro-IoT.adoc
@@ -140,7 +140,6 @@ video::JzMaCKzWyiY[youtube]
 === The Five Principles of Swarm Intelligence
 
 
-able self-assembly in a thousand-robot swarm-xK54Bu9HFRw.mkvmage:./Image3_650.jpg[alt="Traffic jams"]
 image:./swarm.jpeg[alt="Swarm Intelligence"]
 
 - Awareness
@@ -219,7 +218,7 @@ In the case of "b"
 image:./Image3_650.jpg[alt="Traffic jams"] + 
 In a swarm of a thousand simple robots, errors like traffic jams (second from left) and imprecise positioning (far right) are common. (Photo courtesy of Mike Rubenstein and Science/AAAS.)
 
-
+https://www.linkedin.com/pulse/five-principles-swarm-intelligence-alfonso-%C3%AD%C3%B1iguez[origin]
 
 :hardbreaks: