article: add notes to pull system article

src/modules/pull-system/article/FlowSingleSimulation.vue

@@ -1,9 +1,20 @@
 <template>
   <div class="flow-conclusion">
-    <p>Pull system wins!</p>
     <p>
-      Let's make sure it wasn't luck and generate 200 projects delivering 200
-      features each! And see what happens.
+      Pull system wins! The fact that
+      <a
+        target="_blank"
+        rel="noopener noreferrer"
+        href="https://journals.aps.org/pre/abstract/10.1103/PhysRevE.96.052303#:~:text=The%20%E2%80%9Cfaster%2Dis%2Dslower,evacuation%20time%20can%20be%20achieved"
+        >faster is slower</a
+      >
+      is counter-intuitive but it is a fact. The more we push the more we are
+      slowing down the system.
+    </p>
+    <p>
+      Before any conclusion, comparing two simulations is not enough. Let's be
+      more scientific here and let's generate 200 projects delivering 200
+      features each and see what happens.
     </p>
   </div>
 </template>