diff --git a/index.html b/index.html
index a6d695d..dfaa6d4 100644
--- a/index.html
+++ b/index.html
@@ -11,7 +11,7 @@
 <link href="slides_files/libs/quarto-contrib/fontawesome6-0.1.0/all.css" rel="stylesheet">
 <link href="slides_files/libs/quarto-contrib/fontawesome6-0.1.0/latex-fontsize.css" rel="stylesheet"><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <meta charset="utf-8">
-<meta name="generator" content="quarto-1.4.339">
+<meta name="generator" content="quarto-1.4.358">
 <title>slides</title>
 <meta name="apple-mobile-web-app-capable" content="yes">
 <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
@@ -32,7 +32,7 @@
     }
     /* CSS for syntax highlighting */
     pre > code.sourceCode { white-space: pre; position: relative; }
-    pre > code.sourceCode > span { display: inline-block; line-height: 1.25; }
+    pre > code.sourceCode > span { line-height: 1.25; }
     pre > code.sourceCode > span:empty { height: 1.2em; }
     .sourceCode { overflow: visible; }
     code.sourceCode > span { color: inherit; text-decoration: inherit; }
@@ -647,7 +647,7 @@
 <span id="cb7-8"><a href="#cb7-8"></a>  )</span>
 <span id="cb7-9"><a href="#cb7-9"></a>})</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 <div class="cell-output cell-output-stdout">
-<pre><code>Test passed 🎉</code></pre>
+<pre><code>Test passed 🥇</code></pre>
 </div>
 </div>
 <div class="fragment">
@@ -747,7 +747,7 @@
 <span id="cb13-6"><a href="#cb13-6"></a>  )))</span>
 <span id="cb13-7"><a href="#cb13-7"></a>})</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 <div class="cell-output cell-output-stdout">
-<pre><code>Test passed 🎊</code></pre>
+<pre><code>Test passed 🌈</code></pre>
 </div>
 </div>
 <div class="fragment">
@@ -1057,7 +1057,7 @@
 <span id="cb33-6"><a href="#cb33-6"></a>  )</span>
 <span id="cb33-7"><a href="#cb33-7"></a>})</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 <div class="cell-output cell-output-stdout">
-<pre><code>Test passed 🥳</code></pre>
+<pre><code>Test passed 🎊</code></pre>
 </div>
 </div>
 </section><section id="what-test-failure-looks-like-1" class="slide level2 smaller"><h2>What test failure looks like</h2>
@@ -1193,7 +1193,7 @@
 <span id="cb40-12"><a href="#cb40-12"></a>  <span class="fu">expect_snapshot_file</span>(<span class="fu">r_to_json</span>(x), <span class="st">"demo.json"</span>)</span>
 <span id="cb40-13"><a href="#cb40-13"></a>})</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 <div class="cell-output cell-output-stdout">
-<pre><code>Test passed 🥳</code></pre>
+<pre><code>Test passed 🎉</code></pre>
 </div>
 </div>
 </section><section id="what-test-failure-looks-like-2" class="slide level2 smaller"><h2>What test failure looks like</h2>
@@ -1814,7 +1814,7 @@ <h3 id="shiny-apps">Shiny apps</h3>
 <div class="cell">
 <div class="sourceCode cell-code" id="cb70"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb70-1"><a href="#cb70-1"></a>quarto<span class="sc">::</span><span class="fu">quarto_version</span>()</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 <div class="cell-output cell-output-stdout">
-<pre><code>[1] '1.4.339'</code></pre>
+<pre><code>[1] '1.4.358'</code></pre>
 </div>
 <div class="sourceCode cell-code" id="cb72"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb72-1"><a href="#cb72-1"></a>sessioninfo<span class="sc">::</span><span class="fu">session_info</span>(<span class="at">include_base =</span> <span class="cn">TRUE</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 <div class="cell-output cell-output-stdout">
@@ -1828,7 +1828,7 @@ <h3 id="shiny-apps">Shiny apps</h3>
  collate  C.UTF-8
  ctype    C.UTF-8
  tz       UTC
- date     2023-09-03
+ date     2023-09-10
  pandoc   3.1.3 @ /usr/bin/ (via rmarkdown)
 
 ─ Packages ───────────────────────────────────────────────────────────────────
diff --git a/slides.html b/slides.html
index a6d695d..dfaa6d4 100644
--- a/slides.html
+++ b/slides.html
@@ -11,7 +11,7 @@
 <link href="slides_files/libs/quarto-contrib/fontawesome6-0.1.0/all.css" rel="stylesheet">
 <link href="slides_files/libs/quarto-contrib/fontawesome6-0.1.0/latex-fontsize.css" rel="stylesheet"><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <meta charset="utf-8">
-<meta name="generator" content="quarto-1.4.339">
+<meta name="generator" content="quarto-1.4.358">
 <title>slides</title>
 <meta name="apple-mobile-web-app-capable" content="yes">
 <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
@@ -32,7 +32,7 @@
     }
     /* CSS for syntax highlighting */
     pre > code.sourceCode { white-space: pre; position: relative; }
-    pre > code.sourceCode > span { display: inline-block; line-height: 1.25; }
+    pre > code.sourceCode > span { line-height: 1.25; }
     pre > code.sourceCode > span:empty { height: 1.2em; }
     .sourceCode { overflow: visible; }
     code.sourceCode > span { color: inherit; text-decoration: inherit; }
@@ -647,7 +647,7 @@
 <span id="cb7-8"><a href="#cb7-8"></a>  )</span>
 <span id="cb7-9"><a href="#cb7-9"></a>})</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 <div class="cell-output cell-output-stdout">
-<pre><code>Test passed 🎉</code></pre>
+<pre><code>Test passed 🥇</code></pre>
 </div>
 </div>
 <div class="fragment">
@@ -747,7 +747,7 @@
 <span id="cb13-6"><a href="#cb13-6"></a>  )))</span>
 <span id="cb13-7"><a href="#cb13-7"></a>})</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 <div class="cell-output cell-output-stdout">
-<pre><code>Test passed 🎊</code></pre>
+<pre><code>Test passed 🌈</code></pre>
 </div>
 </div>
 <div class="fragment">
@@ -1057,7 +1057,7 @@
 <span id="cb33-6"><a href="#cb33-6"></a>  )</span>
 <span id="cb33-7"><a href="#cb33-7"></a>})</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 <div class="cell-output cell-output-stdout">
-<pre><code>Test passed 🥳</code></pre>
+<pre><code>Test passed 🎊</code></pre>
 </div>
 </div>
 </section><section id="what-test-failure-looks-like-1" class="slide level2 smaller"><h2>What test failure looks like</h2>
@@ -1193,7 +1193,7 @@
 <span id="cb40-12"><a href="#cb40-12"></a>  <span class="fu">expect_snapshot_file</span>(<span class="fu">r_to_json</span>(x), <span class="st">"demo.json"</span>)</span>
 <span id="cb40-13"><a href="#cb40-13"></a>})</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 <div class="cell-output cell-output-stdout">
-<pre><code>Test passed 🥳</code></pre>
+<pre><code>Test passed 🎉</code></pre>
 </div>
 </div>
 </section><section id="what-test-failure-looks-like-2" class="slide level2 smaller"><h2>What test failure looks like</h2>
@@ -1814,7 +1814,7 @@ <h3 id="shiny-apps">Shiny apps</h3>
 <div class="cell">
 <div class="sourceCode cell-code" id="cb70"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb70-1"><a href="#cb70-1"></a>quarto<span class="sc">::</span><span class="fu">quarto_version</span>()</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 <div class="cell-output cell-output-stdout">
-<pre><code>[1] '1.4.339'</code></pre>
+<pre><code>[1] '1.4.358'</code></pre>
 </div>
 <div class="sourceCode cell-code" id="cb72"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb72-1"><a href="#cb72-1"></a>sessioninfo<span class="sc">::</span><span class="fu">session_info</span>(<span class="at">include_base =</span> <span class="cn">TRUE</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 <div class="cell-output cell-output-stdout">
@@ -1828,7 +1828,7 @@ <h3 id="shiny-apps">Shiny apps</h3>
  collate  C.UTF-8
  ctype    C.UTF-8
  tz       UTC
- date     2023-09-03
+ date     2023-09-10
  pandoc   3.1.3 @ /usr/bin/ (via rmarkdown)
 
 ─ Packages ───────────────────────────────────────────────────────────────────
diff --git a/slides/slides.pdf b/slides/slides.pdf
index 59608f2..f52c08a 100644
Binary files a/slides/slides.pdf and b/slides/slides.pdf differ