diff --git a/_images/aech.jpg b/_images/aech.jpg
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diff --git a/_images/community.png b/_images/community.png
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diff --git a/_images/decentralized.jpg b/_images/decentralized.jpg
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diff --git a/_images/entity.jpg b/_images/entity.jpg
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diff --git a/_images/mingling.jpg b/_images/mingling.jpg
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diff --git a/_images/mining.jpg b/_images/mining.jpg
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diff --git a/_images/oil-rig.jpg b/_images/oil-rig.jpg
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diff --git a/_images/people.jpg b/_images/people.jpg
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diff --git a/_images/respect.jpg b/_images/respect.jpg
new file mode 100644
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diff --git a/_images/three-pillars.jpg b/_images/three-pillars.jpg
new file mode 100644
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diff --git a/_images/word95.jpg b/_images/word95.jpg
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diff --git a/algo-ganho-algo-perdido.html b/algo-ganho-algo-perdido.html
index 243f90c..756526a 100644
--- a/algo-ganho-algo-perdido.html
+++ b/algo-ganho-algo-perdido.html
@@ -89,7 +89,7 @@
                     <h2>Júlio Biason</h2>
                 </section>
 
-                <section data-background="_images/drops.jpg" data-header>
+                <section data-background="_images/drops.jpg">
                     <h2 class="semi-opaque">
                         Comunidades:<br/>
                         Ganhamos Algo,<br/>
diff --git a/comunidades.html b/comunidades.html
index bd75cc4..464afe3 100644
--- a/comunidades.html
+++ b/comunidades.html
@@ -97,7 +97,7 @@
                     </h2>
                 </section>
 
-                <section>
+                <!-- <section> -->
                     <section>
                         <img src="_images/who.gif" class="stretch"/>
                     </section>
@@ -113,32 +113,28 @@
                     <section>
                         <img src="_images/unpopular-opinion.jpg" class="stretch"/>
                     </section>
-                </section>
+                <!-- </section> -->
 
+                <!--
                 <section>
-                    <!-- uma das primeiras comunidades que eu participei 
-                    foi o gurpo de usuários de os/2. eu tinha que 
-                    percorrer 80km (de carro) para o encontro -->
-
-                    <!-- junto com o grupo havia um grupo no IRC -->
-                    <section>
-                        <img src="_images/os2.jpg" class="stretch"/>
-                    </section>
-
-                    <section>
-                        <img src='_images/taquara-portoalegre.png' class="stretch"/>
-                    </section>
-
-                    <section>
-                        <img src="_images/presenter.jpg" class="stretch"/>
-                    </section>
+                    <h2>Comunidade:</h2>
+                    <p class="fragment">
+                    Agrupamento social que se caracteriza por acentuada coesão
+                    baseada no consenso espontâneo dos indivíduos que o
+                    constituem.
+                    </p>
+                </section>
+                -->
 
-                    <section>
-                        <img src="_images/os2-irc.png" class="stretch"/>
-                    </section>
+                <section>
+                    <img src="_images/three-pillars.jpg" class="stretch"/>
                 </section>
 
                 <section>
+                    <h2>O que é uma "comunidade"?</h2>
+                </section>
+
+                <!-- <section> -->
                     <section>
                         <img src="_images/Unisinos.jpg" class="stretch"/>
                         <!-- bolsista gradução -->
@@ -150,9 +146,19 @@
                     <section>
                         <img src="_images/corridor.jpg" class="stretch"/>
                     </section>
-                </section>
 
-                <section>
+                    <section>
+                        <img src="_images/decentralized.jpg" class="stretch"/>
+                    </section>
+                <!-- </section> -->
+
+                <!-- <section> -->
+                    <section>
+                        <p>(2016)</p>
+                        <img src="_images/python-floripa.png" class="stretch"/>
+                        <!-- python floripa, "gaúchos de araque" -->
+                    </section>
+
                     <section>
                         <img src="_images/pytche.png" class="stretch"/>
                     </section>
@@ -192,72 +198,212 @@
                     <section>
                         <img src="_images/absolutely_nothing.jpg" class="stretch"/>
                     </section>
-                </section>
+                <!-- </section> -->
 
-                <section>
+                <!-- <section> -->
                     <section>
-                        <img src="_images/tchelinux.png" class="stretch"/>
+                        <img src="_images/2020.jpg" class="stretch"/>
                     </section>
 
                     <section>
-                        <img src="_images/tchelinux-2019.png" class="stretch"/>
+                        <!-- pandemia -->
+                        <img src="_images/covid.jpg" class="stretch"/>
                     </section>
 
                     <section>
-                        <img src="_images/tchelinux-volta-2019.png" class="stretch">
-                        <!-- tchelinux, 2019, 3000km -->
-                        <!-- alegrete -->
-                        <!-- bagé -->
-                        <!-- bento gonçalves -->
-                        <!-- camaquã -->
-                        <!-- caxias do sul -->
-                        <!-- erechim -->
-                        <!-- novo hamburgo -->
-                        <!-- passo fundo -->
-                        <!-- pelotas -->
-                        <!-- porto alegre -->
-                        <!-- rio grande -->
-                        <!-- santa cruz do sul -->
-                        <!-- santa maria -->
-                        <!-- santana do livramento -->
-                        <!-- santo angelo -->
+                        <img src="_images/things-change.jpg" class="stretch"/>
                     </section>
+                <!-- </section> -->
 
+                <!-- <section> -->
                     <section>
-                        <img src="_images/fugindo.png" class="stretch"/>
-                        <!-- apresentação de Python no Tchelinux -->
-                        <!-- sugestões para criação de grupos locais -->
+                        <img src="_images/teams-video-chat.jpg" class="stretch"/>
+                        <!-- remoto -->
                     </section>
 
                     <section>
-                        <img src="_images/Interested-or-interesting.jpg" class="stretch"/>
+                        <img src="_images/telegram.png" style="float:left;max-width:200px;">
+                        <img src="_images/whatsapp.png" style="float:right;max-width:300px;">
+                        <!-- chat se tornou o principal meio de comunicação -->
                     </section>
-                </section>
+                <!-- </section> -->
 
-                <section>
+                <!-- <section> -->
                     <section>
-                        <img src="_images/2020.jpg" class="stretch"/>
+                        <img src="_images/teams-camera-off.png" class="stretch"/>
                     </section>
 
                     <section>
-                        <!-- pandemia -->
-                        <img src="_images/covid.jpg" class="stretch"/>
+                        <ul class="chat">
+                            <li><span>X:</span> "Pessoal, alguém trabalha com HTMX? Estou com um problema no load..."</li>
+                            <li><span>X:</span> "O Json tem [{"title": "Room", "description": "Nome do cozinheiro"}]"</li>
+                            <li><span>Y:</span> "X, você é do ramo de cozinha?"</li>
+                        </ul>
                     </section>
 
                     <section>
-                        <img src="_images/things-change.jpg" class="stretch"/>
+                        <ul class="chat">
+                            <li><span>X:</span> "Y, tentei o que vc falou mas deu o erro A. O que pode ser?"</li>
+                            <li><span>X:</span> "Responde aí"</li>
+                        </ul>
+                    </section>
+
+                    <section>
+                        <img src="_images/lots-of-messages.png" class="stretch"/>
+                    </section>
+                <!-- </section> -->
+
+                <!-- <section> -->
+                    <section>
+                        <h2>O que é uma "comunidade"?</h2>
+                    </section>
+
+                    <section>
+                        <img src="_images/community.png" class="stretch"/>
+                    </section>
+
+                    <!-- construido com respeito -->
+                    <section>
+                        <img src="_images/respect.jpg" class="stretch"/>
+                    </section>
+
+                    <!-- difícil respeitar uma janela -->
+                    <section>
+                        <img src="_images/word95.jpg" class="stretch"/>
                     </section>
-                </section>
 
-                <section>
                     <section>
                         <img src="_images/teams-video-chat.jpg" class="stretch"/>
-                        <!-- remoto -->
                     </section>
 
+                    <!-- difícil respeitar Xxx Légôlàs XXX -->
+                    <section>
+                        <ul class="chat">
+                            <li><span>Xxx Légôlàs XXX</span>: Olá</li>
+                        </ul>
+                    </section>
+
+                    <!-- quando não há alguem querendo explorar a comunidade -->
+                    <!-- <section> -->
+                    <!--     <img src="_images/mining.jpg" class="stretch"/> -->
+                    <!-- </section> -->
+
+                    <!-- não é uma pessoa, é uma "entidade" -->
+                    <section>
+                        <img src="_images/entity.jpg" class="stretch"/>
+                    </section>
+                <!-- </section> -->
+
+                <!-- <section> -->
+                    <!-- do outro lado da moeda -->
+                    <section>
+                        <img src="_images/coin.jpg" class="stretch"/>
+                    </section>
+
+                    <!-- camera fechada para evitar assédio -->
                     <section>
                         <img src="_images/teams-camera-off.png" class="stretch"/>
                     </section>
+
+                    <!-- Xxx Légôlàs XXX: medo do erro -->
+                    <section>
+                        <ul class="chat">
+                            <li><span>Xxx Légôlàs XXX</span>: Olá</li>
+                        </ul>
+                    </section>
+
+                    <!-- aech -->
+                    <section>
+                        <img src="_images/aech.jpg" class="stretch"/>
+                    </section>
+
+                    <!-- "responde aí": tempo? pressão? preguiça? -->
+                    <section>
+                        <ul class="chat">
+                            <li><span>X:</span> "Responde aí"</li>
+                        </ul>
+                    </section>
+
+                    <!-- não é uma pessoa, é uma "entidade" -->
+                    <section>
+                        <img src="_images/entity.jpg" class="stretch"/>
+                    </section>
+                <!-- </section> -->
+
+                <!-- <section> -->
+                    <!-- e agora? -->
+                    <section>
+                        <img src="_images/dunno.jpg" class="stretch"/>
+                    </section>
+
+                    <!-- começar de novo -->
+                    <section>
+                        <img src="_images/back-to-the-future.jpeg" class="stretch"/>
+                    </section>
+
+                    <!-- pessoa por pessoa -->
+                    <section>
+                        <img src="_images/people.jpg" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/socializing.jpeg" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/mingling.jpg" class="stretch"/>
+                    </section>
+                <!-- </section> -->
+
+                <!-- <section> -->
+                    <section>
+                        <img src="_images/one-more-thing.png" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <!-- se você está num dos grupos do telegram, vire pra pessoa do seu lado e diga "oi, eu sou o X do telegram" -->
+                        <ul class="chat">
+                            <li><span>Xxx Légôlàs XXX</span>: Olá</li>
+                        </ul>
+                    </section>
+
+                    <section>
+                        <img src="_images/entity.jpg" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/anticipating.jpg" class="stretch"/>
+                    </section>
+                <!-- </section> -->
+
+                <section data-background='_images/thats-all-folks.jpg'>
+                    <section>
+                        <div class="fragment semi-opaque">
+                            <ul class="empty">
+								<li><a href="https://functional.cafe/@juliobiason">https://functional.cafe/@juliobiason</a></li>
+								<li><a href="https://t.me/juliobiason">https://t.me/juliobiason</a></li>
+                                <li>julio.biason@pm.me</li>
+                                <li><a href="https://presentations.juliobiason.me">https://presentations.juliobiason.me</a></li>
+                            </ul>
+                        </div>
+				</section>
+            </div>
+        </div>
+
+        <script src="reveal.js/lib/js/head.min.js"></script>
+        <script src="reveal.js/js/reveal.js"></script>
+
+        <script>
+            // Full list of configuration options available at:
+            // https://github.com/hakimel/reveal.js#configuration
+            Reveal.initialize({
+                controls: true,
+                progress: true,
+                history: true,
+                center: true,
+                // showNotes: true,
+
+                transition: 'slide', // none/fade/slide/convex/concave/zoom
                 </section>
 
                 <section data-background='_images/thats-all-folks.jpg'>
diff --git a/index.json b/index.json
index 4f8397e..6db04c7 100644
--- a/index.json
+++ b/index.json
@@ -1 +1 @@
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\ No newline at end of file
+[{"presentation": "unit-in-unittests-2.html", "title": "\"Unit\" em \"Unit Tests\"", "image": "_images/tdd-kentbeck-book.jpg", "changed": "2023-09-15 21:09:01"}, {"presentation": "gramatica-vim.html", "title": "A Gram\u00e1tica do VIM", "image": "_images/vim.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "ajax-sosp-cors-csrf.html", "title": "AJAX / SOSP / CORS / CSRF", "image": "_images/ajax-sosp-cors-csrf.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "activitypub.html", "title": "ActivityPub", "image": "_images/activitypub-logo.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "cargo-cult.html", "title": "Cargo Cult", "image": "_images/cargo-cult.jpg", "changed": "2023-09-15 21:09:01"}, {"presentation": "com-licenca.html", "title": "Com Licen\u00e7a!", "image": "_images/patrick-license.jpeg", "changed": "2023-09-15 21:09:01"}, {"presentation": "django-full.html", "title": "Django", "image": "_images/django-allauth.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "django.html", "title": "Entendendo Django", "image": "_images/django-allauth.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "django-rest.html", "title": "Entendendo Django REST Framework", "image": "_images/django-rest.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "filosofando-testes.html", "title": "Filosofando sobre Testes", "image": "_images/tdd-kentbeck-book.jpg", "changed": "2023-09-15 21:09:01"}, {"presentation": "flask-40mins.html", "title": "Flask em 40 Minutos ou Menos", "image": "_images/flask.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "flink.html", "title": "Flink", "image": "_images/streamprocessing-flink.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "fugindo-com-python-2.html", "title": "Fugindo para as Colinas Com Python", "image": "_images/python.jpg", "changed": "2023-09-15 21:09:01"}, {"presentation": "gitsvn.html", "title": "GIT + GIT-SVN", "image": "_images/Sketch27014711.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "gitflow.html", "title": "GIT Flow", "image": "_images/git-workflow-gitflow.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "licencas-em-10-minutos.html", "title": "Licen\u00e7as Open Source Em 10 Minutos", "image": "_images/patrick-license.jpeg", "changed": "2023-10-03 18:49:16"}, {"presentation": "rust-legal.html", "title": "O Que Rust Tem de Legal", "image": "_images/rust.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "tchelinux.html", "title": "O Que \u00c9 o Tchelinux?", "image": "_images/tchelinux.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "porque-como-opensource.html", "title": "Por que e Como Participar de Projetos Open Source", "image": "_images/osi_keyhole_300X300_90ppi_0.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "porque-rust.html", "title": "Porque Voc\u00ea Deveria Aprender Rust", "image": "_images/rust-ferris.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "pycaxias2020.html", "title": "PyCaxias 2020", "image": "_images/pycaxias.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "pypoa.html", "title": "PyPoa 2014", "image": "_images/poa.jpg", "changed": "2023-09-15 21:09:01"}, {"presentation": "python23six.html", "title": "Python 2 + 3 = Six", "image": "_images/snake-six.jpg", "changed": "2023-09-15 21:09:01"}, {"presentation": "python36.html", "title": "Python 3.6", "image": "_images/python.jpg", "changed": "2023-09-15 21:09:01"}, {"presentation": "rest.html", "title": "ReST", "image": "_images/Seascapeshd.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "rust-em-10-minutos.html", "title": "Rust Em 10 Minutos", "image": "_images/rust-evangelism.jpg", "changed": "2023-10-03 18:49:16"}, {"presentation": "rustlatam-2019.html", "title": "Rust Latam 2019", "image": "_images/rustlatam.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "quick-rust.html", "title": "R\u00e1pida Introdu\u00e7\u00e3o ao Rust", "image": "_images/rust-ferris.png", "changed": "2023-09-15 21:09:01"}, {"presentation": "spa.html", "title": "SPA", "image": "_images/Eau_Rouge_1997.jpg", "changed": "2023-09-15 21:09:01"}, {"presentation": "intro-stream-processing.html", "title": "Uma N\u00e3o-Gentil Introdu\u00e7\u00e3o ao Stream Processing", "image": "_images/streamprocessing.jpg", "changed": "2023-09-15 21:09:01"}, {"presentation": "survivorship-bias.html", "title": "Vi\u00e9s de Sobre-<br/>viv\u00eancia", "image": "_images/survivorship-bias.png", "changed": "2023-10-24 18:18:51"}]
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