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diff --git a/about/index.html b/about/index.html
@@ -3,6 +3,6 @@
 <a href=../posts/><b>Posts</b></a>.
 <a href=../tags/><b>Tags</b></a>.
 <a href=../about/><b>About</b></a>.</nav></p></header><main><article><h1>about</h1><b><time>2022-01-01 00:00:00</time></b>
-<a href=../tags/public>PUBLIC</a><div><p>YANG, Zhenfei</p></div></article></main><script src=https://utteranc.es/client.js repo=dvorak0/site issue-term=pathname theme=github-light crossorigin=anonymous async></script><script async src=https://www.yangzhenfei.com/js/mathjax-config.js></script><script type=text/javascript async src=https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/tex-chtml.min.js></script><aside><div><div><h3>LATEST POSTS</h3></div><div><ul><li><a href=../posts/20240527151116-stoicism/>斯多葛主义(Stoicism)</a></li><li><a href=../posts/20240131143759-avp%E4%BD%93%E9%AA%8C/>AVP体验</a></li><li><a href=../posts/20240130180127-%E5%85%A8%E8%87%AA%E5%8A%A8%E9%A9%BE%E9%A9%B6%E7%9A%84%E9%87%8C%E7%A8%8B%E7%A2%91_%E5%90%97/>全自动驾驶的里程碑，吗？</a></li><li><a href=../posts/20231108162044-llm_is_dead_long_live_agent/>LLM is dead, long live agent</a></li><li><a href=../posts/20231023124926-%E7%94%A8%E6%89%93%E5%8D%A1%E5%B8%AE%E5%8A%A9%E4%B9%A0%E6%83%AF%E5%85%BB%E6%88%90/>用打卡帮助习惯养成-Streaks</a></li></ul></div></div></aside><footer><p>&copy; 2024 <a href=https://www.yangzhenfei.com/><b>Seeking Complexity</b></a>.
+<a href=../tags/public>PUBLIC</a><div><p>YANG, Zhenfei</p></div></article></main><script src=https://utteranc.es/client.js repo=dvorak0/site issue-term=pathname theme=github-light crossorigin=anonymous async></script><script async src=https://www.yangzhenfei.com/js/mathjax-config.js></script><script type=text/javascript async src=https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/tex-chtml.min.js></script><aside><div><div><h3>LATEST POSTS</h3></div><div><ul><li><a href=../posts/20240720130238-low_latency_audio_measurement/>low latency audio: measurement</a></li><li><a href=../posts/20240527151116-stoicism/>斯多葛主义(Stoicism)</a></li><li><a href=../posts/20240131143759-avp%E4%BD%93%E9%AA%8C/>AVP体验</a></li><li><a href=../posts/20240130180127-%E5%85%A8%E8%87%AA%E5%8A%A8%E9%A9%BE%E9%A9%B6%E7%9A%84%E9%87%8C%E7%A8%8B%E7%A2%91_%E5%90%97/>全自动驾驶的里程碑，吗？</a></li><li><a href=../posts/20231108162044-llm_is_dead_long_live_agent/>LLM is dead, long live agent</a></li></ul></div></div></aside><footer><p>&copy; 2024 <a href=https://www.yangzhenfei.com/><b>Seeking Complexity</b></a>.
 <a href=https://github.com/dvorak0><b>Github</b></a>.
 <a href=https://twitter.com/dvorak0><b>Twitter</b></a>.</p></footer></body></html>
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@@ -2,7 +2,8 @@
 <link rel=stylesheet href=./css/style.css><link rel=alternate type=application/rss+xml href=./index.xml title="Seeking Complexity"></head><body><header><script defer src=https://worker.yangzhenfei.com/a.js></script><script defer>window.dataLayer=window.dataLayer||[];function gtag(){dataLayer.push(arguments)}gtag("js",new Date),gtag("config","G-JHXS14NDHV")</script>========================<br>== <a href=https://www.yangzhenfei.com/>Seeking Complexity</a> ==<br>========================<div style=float:right></div><br><p><nav><a href=./><b>Start</b></a>.
 <a href=./posts/><b>Posts</b></a>.
 <a href=./tags/><b>Tags</b></a>.
-<a href=./about/><b>About</b></a>.</nav></p></header><main><article><h1><a href=https://www.yangzhenfei.com/posts/20240527151116-stoicism/>斯多葛主义(Stoicism)</a></h1><b><time>2024-05-27 15:11:00</time></b>
+<a href=./about/><b>About</b></a>.</nav></p></header><main><article><h1><a href=https://www.yangzhenfei.com/posts/20240720130238-low_latency_audio_measurement/>low latency audio: measurement</a></h1><b><time>2024-07-20 13:02:00</time></b>
+<a href=./tags/public/>PUBLIC</a><div><p>终于有时间做一个测试，回答长久以来(见<a href=./posts/20211130195311-low_latency_audio/>low latency audio</a>)很有疑问的一个问题。</p><p>我们常用的语音通话服务的延迟究竟是多少。</p><a href=https://www.yangzhenfei.com/posts/20240720130238-low_latency_audio_measurement/>Read more...</a></div></article><article><h1><a href=https://www.yangzhenfei.com/posts/20240527151116-stoicism/>斯多葛主义(Stoicism)</a></h1><b><time>2024-05-27 15:11:00</time></b>
 <a href=./tags/public/>PUBLIC</a><div><p>connect the dots.</p><p>今天忽然意识到，这样一个晦涩的词，串联起来许多片段：</p><ol><li>我意识到自省的重要性<a href>reflection</a>，特别是以日记的方式写下来<a href=./posts/20220510210940-write_it_down/>write_it_down</a>。</li><li>无意中买了《沉思录》。被他的封面吸引，但是因为他的游荡的语言感无法完成阅读。
 现在才意识到，这是他的每日自省，果然和我自己平常写下来的东西一样不着东西。</li><li><a href=./posts/20211213123832-%E5%86%A5%E6%83%B3/>冥想</a>自不用说，甚至今天才意识到《沉思录》的原文就是Meditations。
 mental strength是可以被锻炼的。
@@ -16,8 +17,7 @@
 <a href=./tags/public/>PUBLIC</a><div><p>当我被elon musk的first principle折服的时候，我也意识到，first principle的对面一定也是有价值的。</p><p>这类似inductive和deductive的区别。</p><p>在历史上，也存在相当长的一段时间是以归纳作为最根本的真理的一段时期。</p><blockquote><p>归纳问题的经典哲学处理，意味着为归纳推理找到了正当理由，是苏格兰人大卫·休谟完成的。休谟突出了依据重复经验的模式的我们的日常推理，而不是演绎上的有效论证。比如我们相信面包对我们有益，因为过去一直如此，但是面包将来对我们有害至少是可以想象的。</p><p>休谟说对所有事情都坚持可靠的演绎上的正当有理的人会饿死的。替代激进怀疑论关于所有事物的无所作为，他提倡基于常识的实用怀疑论，这里接受归纳法是必然的。</p></blockquote><p>今天才看到一个针对两个思考模型进行对比的文章。</p><p>文章的出发点是：如何平衡first principle和pattern matching。</p><p><a href=./ox-hugo/commoncog.com-How%20First%20Principles%20Thinking%20Fails.pdf>how first principles thinking fails</a></p></div></article><article><h1><a href=https://www.yangzhenfei.com/posts/20230531141820-system_1_and_system_2/>system_1_and_system_2</a></h1><b><time>2023-05-31 14:18:00</time></b>
 <a href=./tags/public/>PUBLIC</a><div>一种把思维能力二分类的说法：直觉式的反应，和深思熟虑的反应。
 很多地方可以类比。</div></article><article><h1><a href=https://www.yangzhenfei.com/posts/20230518155549-chain_of_thoughts/>chain_of_thoughts</a></h1><b><time>2023-05-18 15:55:00</time></b>
-<a href=./tags/public/>PUBLIC</a><div><p>（再一次蹭LLM的热点）</p><p>在过去的工作经验里面学到的可能是最重要的一点，就是不断追问。</p><p>很简单的一个操作，只要反复做下去，就会有不可思议的效果。</p><p>最后会得到一个很富有争议性的结论，可能是对的，可能是错的。</p><p>但是都比很多白话要有价值。</p><a href=https://www.yangzhenfei.com/posts/20230518155549-chain_of_thoughts/>Read more...</a></div></article><article><h1><a href=https://www.yangzhenfei.com/posts/20230510165215-%E9%87%8D%E6%96%B0%E8%AE%A4%E8%AF%86geohot/>重新认识geohot</a></h1><b><time>2023-05-10 16:52:00</time></b>
-<a href=./tags/public/>PUBLIC</a><div><p>George Hotz。可能为人熟知的标签是：</p><ol><li>破解小子，iOS和PS 3的越狱</li><li>用乐视/一加手机做自动驾驶</li></ol><p>所以是个玩票的？</p><p>看看他实际做过什么，在过去的5年里。</p><a href=https://www.yangzhenfei.com/posts/20230510165215-%E9%87%8D%E6%96%B0%E8%AE%A4%E8%AF%86geohot/>Read more...</a></div></article><div>1 of 5
+<a href=./tags/public/>PUBLIC</a><div><p>（再一次蹭LLM的热点）</p><p>在过去的工作经验里面学到的可能是最重要的一点，就是不断追问。</p><p>很简单的一个操作，只要反复做下去，就会有不可思议的效果。</p><p>最后会得到一个很富有争议性的结论，可能是对的，可能是错的。</p><p>但是都比很多白话要有价值。</p><a href=https://www.yangzhenfei.com/posts/20230518155549-chain_of_thoughts/>Read more...</a></div></article><div>1 of 5
 <a href=./page/2/>Next Page</a></div></main><footer><p>&copy; 2024 <a href=https://www.yangzhenfei.com/><b>Seeking Complexity</b></a>.
 <a href=https://github.com/dvorak0><b>Github</b></a>.
 <a href=https://twitter.com/dvorak0><b>Twitter</b></a>.</p></footer></body></html>
diff --git a/index.xml b/index.xml
@@ -1,4 +1,5 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Seeking Complexity</title><link>https://www.yangzhenfei.com/</link><description>Recent content on Seeking Complexity</description><generator>Hugo</generator><language>zh-cn</language><lastBuildDate>Mon, 27 May 2024 15:11:00 +0800</lastBuildDate><atom:link href="https://www.yangzhenfei.com/index.xml" rel="self" type="application/rss+xml"/><item><title>斯多葛主义(Stoicism)</title><link>https://www.yangzhenfei.com/posts/20240527151116-stoicism/</link><pubDate>Mon, 27 May 2024 15:11:00 +0800</pubDate><guid>https://www.yangzhenfei.com/posts/20240527151116-stoicism/</guid><description>&lt;p>connect the dots.&lt;/p>
+<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Seeking Complexity</title><link>https://www.yangzhenfei.com/</link><description>Recent content on Seeking Complexity</description><generator>Hugo</generator><language>zh-cn</language><lastBuildDate>Sat, 20 Jul 2024 13:02:00 +0800</lastBuildDate><atom:link href="https://www.yangzhenfei.com/index.xml" rel="self" type="application/rss+xml"/><item><title>low latency audio: measurement</title><link>https://www.yangzhenfei.com/posts/20240720130238-low_latency_audio_measurement/</link><pubDate>Sat, 20 Jul 2024 13:02:00 +0800</pubDate><guid>https://www.yangzhenfei.com/posts/20240720130238-low_latency_audio_measurement/</guid><description>&lt;p>终于有时间做一个测试，回答长久以来(见&lt;a href="./posts/20211130195311-low_latency_audio/">low latency audio&lt;/a>)很有疑问的一个问题。&lt;/p>
+&lt;p>我们常用的语音通话服务的延迟究竟是多少。&lt;/p></description></item><item><title>斯多葛主义(Stoicism)</title><link>https://www.yangzhenfei.com/posts/20240527151116-stoicism/</link><pubDate>Mon, 27 May 2024 15:11:00 +0800</pubDate><guid>https://www.yangzhenfei.com/posts/20240527151116-stoicism/</guid><description>&lt;p>connect the dots.&lt;/p>
 &lt;p>今天忽然意识到，这样一个晦涩的词，串联起来许多片段：&lt;/p>
 &lt;ol>
 &lt;li>我意识到自省的重要性&lt;a href="">reflection&lt;/a>，特别是以日记的方式写下来&lt;a href="./posts/20220510210940-write_it_down/">write_it_down&lt;/a>。&lt;/li>
@@ -211,7 +212,7 @@ https://taku-y.github.io/notebook/20170919/slam_advi.html</description></item><i
 &lt;/ul></description></item><item><title>证伪</title><link>https://www.yangzhenfei.com/posts/20211213123539-%E8%AF%81%E4%BC%AA/</link><pubDate>Mon, 13 Dec 2021 12:35:00 +0800</pubDate><guid>https://www.yangzhenfei.com/posts/20211213123539-%E8%AF%81%E4%BC%AA/</guid><description>&lt;h2 id="motivation">Motivation&lt;/h2>
 &lt;p>如果一个理论可以强大地推导出任意理论，可能反而是无意义的。&lt;/p>
 &lt;p>历史上一个参考是弗洛伊德的对梦的解释。还有被熟知的：房间里有一头无法被任何方法探测的大象。&lt;/p></description></item><item><title>double-entry_bookkeeping</title><link>https://www.yangzhenfei.com/posts/20211213123003-double_entry_bookkeeping/</link><pubDate>Mon, 13 Dec 2021 12:30:00 +0800</pubDate><guid>https://www.yangzhenfei.com/posts/20211213123003-double_entry_bookkeeping/</guid><description>&lt;p>\[income + expenses + equity + liability = 0\]&lt;/p></description></item><item><title>declarative_programming</title><link>https://www.yangzhenfei.com/posts/20211202120838-declarative_programming/</link><pubDate>Thu, 02 Dec 2021 12:08:00 +0800</pubDate><guid>https://www.yangzhenfei.com/posts/20211202120838-declarative_programming/</guid><description>过程式和声明式的范式对比，出现在很多地方，这里罗列一些。
-declarative imperative Lisp C TensorFlow PyTorth Nix Apt/Pacman SQL ORM CMake/Makefile build.sh Halide OpenMP/thread pool Symbolic Diff (symforce) Automatic Diff (JAX/Jet) DP for loop DP recursive with cache (used in transformer inference) Eigen Lazy Evaluation OpenBLAS</description></item><item><title>low_latency_audio</title><link>https://www.yangzhenfei.com/posts/20211130195311-low_latency_audio/</link><pubDate>Tue, 30 Nov 2021 19:53:00 +0800</pubDate><guid>https://www.yangzhenfei.com/posts/20211130195311-low_latency_audio/</guid><description>&lt;p>当我们讨论元宇宙的时候，能不能先把线上讨论的音频延迟问题解决。。。&lt;/p>
+declarative imperative Lisp C TensorFlow PyTorth Nix Apt/Pacman SQL ORM CMake/Makefile build.sh Halide OpenMP/thread pool Symbolic Diff (symforce) Automatic Diff (JAX/Jet) DP for loop DP recursive with cache (used in transformer inference) Eigen Lazy Evaluation OpenBLAS</description></item><item><title>low latency audio</title><link>https://www.yangzhenfei.com/posts/20211130195311-low_latency_audio/</link><pubDate>Tue, 30 Nov 2021 19:53:00 +0800</pubDate><guid>https://www.yangzhenfei.com/posts/20211130195311-low_latency_audio/</guid><description>&lt;p>当我们讨论元宇宙的时候，能不能先把线上讨论的音频延迟问题解决。。。&lt;/p>
 &lt;p>这个问题解决是乐观的，因为我们通常认为影响延迟的部分（真实的网络延迟，中美做到200ms并不难，但是做到100ms几乎在物理上是不可能的）在这个问题里面并不占主要部分。&lt;/p></description></item><item><title>tools</title><link>https://www.yangzhenfei.com/posts/20211115121752-tools/</link><pubDate>Mon, 15 Nov 2021 12:17:00 +0800</pubDate><guid>https://www.yangzhenfei.com/posts/20211115121752-tools/</guid><description>&lt;p>这里记录能帮助尽快接近singularity的方法。&lt;/p>
 &lt;p>一般来说，学习曲线陡峭~=能形成累计优势：&lt;/p>
 &lt;ul>