diff --git a/_sources/act1/chapter2.ipynb b/_sources/act1/chapter2.ipynb
index 2b2ce1f..af6532e 100644
--- a/_sources/act1/chapter2.ipynb
+++ b/_sources/act1/chapter2.ipynb
@@ -6,7 +6,7 @@
    "source": [
     "# Mecca-Medina Dichotomy\n",
     "\n",
-    "<iframe src=\"https://www.youtube.com/embed/KK9c2rtqrlQ?start=6863\" style=\"width:80%;height:350px;\"></iframe>\n",
+    "<iframe src=\"https://www.youtube.com/embed/KK9c2rtqrlQ?start=6803\" style=\"width:80%;height:350px;\"></iframe>\n",
     "\n",
     "```{figure} ../figures/blanche.*\n",
     "---\n",
diff --git a/act1/chapter2.html b/act1/chapter2.html
index 81f3c0c..58252df 100644
--- a/act1/chapter2.html
+++ b/act1/chapter2.html
@@ -460,7 +460,7 @@ <h2> Contents </h2>
                   
   <section class="tex2jax_ignore mathjax_ignore" id="mecca-medina-dichotomy">
 <h1>Mecca-Medina Dichotomy<a class="headerlink" href="#mecca-medina-dichotomy" title="Permalink to this heading">#</a></h1>
-<iframe src="https://www.youtube.com/embed/KK9c2rtqrlQ?start=6863" style="width:80%;height:350px;"></iframe>
+<iframe src="https://www.youtube.com/embed/KK9c2rtqrlQ?start=6803" style="width:80%;height:350px;"></iframe>
 <figure class="align-default" id="id2">
 <a class="reference internal image-reference" href="../_images/blanche.png"><img alt="../_images/blanche.png" src="../_images/blanche.png" style="width: 1px; height: 1px;" /></a>
 <figcaption>