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 					</ul>
 					</ul>
 				</section>
+				<section>
+					<h2>Messages are Everything</h2>
+					<ul>
+						<li>Messages form IPC</li>
+						<li>Scalars or Pages</li>
+						<li>Blocking or Nonblocking</li>
+					</ul>
+				</section>
+				<section>
+					<h2>Example: Sleeping</h2>
+
+					<code>sleep(msec: usize)</code>
+					<ol>
+						<li>Connect to "ticktimer" server</li>
+						<li>Send a `BlockingScalar` with desired duration</li>
+						<li>Client will block until server replies</li>
+						<li>Server calls `ReturnScalar()` after expiration</li>
+					</ol>
+				</section>
+
+				<section>
+					<h2>Example: Mutex</h2>
+					<code>mutex.lock().unwrap()</code>
+					<ol>
+						<li>Fast path with <code>AtomicIsize</code></li>
+						<li>Slow path by sending <code>LockMutex</code></li>
+						<li>On unlock, contending thread will see poison and send <code>UnlockMutex</code></li>
+						<li>Server will reply to <code>LockMutex</code> message to unblock the thread</li>
+					</ol>
+				</section>
+
+				<section>
+					<h2>MMUs are Amazing</h2>
+					<ul>
+						<li>XIP flash for free!</li>
+						<li>Swap space</li>
+						<li>Encrypted swap? No problem!</li>
+						<li>Realtime patching broken hardware</li>
+					</ul>
+				</section>
 				<section>
 					<h2>How can I use it?</h2>
 					<div class="r-hstack">