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Based on "Claude Code Can Be Your Second Brain" from Every Watch the original video

The AI Amplifier: Inside the Ultimate Second Brain for Deep Work

In an age where digital tools promise productivity but often deliver distraction, Noah Brier has engineered a system that transcends the typical. Co-founder of successful startups like Percolate and Variance, and now leading AI strategy consultancy Alfik, Brier has cultivated a unique approach to harnessing artificial intelligence. His setup, which he affectionately refers to as a "heavy duty Claude Code setup" rather than just for coding, transforms an Obsidian note-taking vault into a true second brain – a relentless thinking partner, researcher, and even a logkeeper of his evolving ideas, all accessible from anywhere.

This isn't just about using AI for quick answers or content generation; it's about deep, sustained intellectual work, reimagined. Brier's innovation lies in his ability to leverage AI not as a replacement for human thought, but as a profound amplifier, enabling him to think, research, write, and even ship code from the most unexpected of places: his phone.

The Second Brain Unleashed: Noah's Obsidian-Claude Code Nexus

At the heart of Brier's system is Obsidian, a popular note-taking application that stores notes as plain markdown files in a user's local file system. This choice is deliberate, offering flexibility and ownership that traditional cloud-based note apps often lack. "One of the big advantages with Obsidian as a note-taking platform is that it's a bunch of markdown files and a bunch of folders," Brier explains, "and they can then be synced with Git and you can do lots of other fun kinds of things."

On top of this Obsidian vault, Brier runs Claude Code, Anthropic's AI assistant designed for coding and text processing. But Brier's primary use isn't for writing code; it's for interacting with his vast archive of notes. His most recent "obsession," he shares, has been standing up a home server in his basement to host this entire setup, making his Claude Code-powered Obsidian vault accessible and fully functional on his phone. This seemingly simple step has been transformative, turning his phone from a device primarily for consumption into a powerful tool for deep intellectual engagement.

"I found whether it's like Claude Code and Obsidian or... even Claude Code and code right," Brier notes, "being able to sign in on your phone and have Claude Code push a small update to something because you just realize it while you're out is amazing." This capability extends the reach of his second brain, allowing him to seamlessly transition between desktop and mobile environments for complex tasks.

Beyond Generative: The Power of AI's "Reading"

A core philosophy underpinning Brier's workflow is the distinction between "thinking mode" and "writing mode." He observes that most AI models, often labeled "generative," are overly eager to produce artifacts – outlines, drafts, or completed pieces. This, he argues, misses the AI's most powerful, yet often overlooked, capability: its ability to "read."

"I think partially because we call it generative, there's entirely too much focus on its ability to write and not enough focus on its ability to read," Brier states. "Its ability to read is incredible, right? And I think, arguably, sort of like much more useful on a day-to-day basis. Like we produce artifacts far less frequently than we just like think about things."

To enforce this distinction, Brier employs a specific "thinking partner" sub-agent within Claude Code. This agent is meticulously prompted with instructions like: "Your role is to facilitate thinking... don't try to write the thing." He even includes explicit directives: "I do not under any circumstances want you to try to write it. Take this literally. Do not create outlines, drafts, or any versions of talks/writing. Only gather and organize the requested materials." This ensures the AI acts as a Socratic guide, asking sharp questions and helping him explore complex problems, rather than prematurely drafting solutions.

When embarking on a new project, such as preparing for a conference talk, Brier's process is meticulous:

  1. Project Initialization: He creates a new folder (following the PARA method for organization) and starts Claude Code in his root Obsidian directory, giving it access to his entire vault.
  2. Contextualization: He feeds the AI past talks and general ideas to establish style and scope.
  3. Vault-Wide Research: Crucially, he instructs Claude Code to search his entire 1500+ note archive for existing research relevant to the new project and pull it into a dedicated "research" folder. This jumpstarts the process with his own prior knowledge.
  4. External Chats: Transcripts from conversations with other AI models (ChatGPT, Grok, Claude) are also clipped and stored in a "chats" folder, becoming part of the research corpus.
  5. Daily Progress Log: At the end of each day, Brier has Claude Code review all new notes and chats, then summarize what he's learned and the best ideas that emerged, helping to push the project forward.

Perhaps one of the most powerful features for maintaining deep work is the "catch me up" command. After interruptions, Brier can simply ask Claude Code, "Can you catch me up on the last three days of research?" The AI then sifts through all new material in the project folder, providing a concise summary of progress and insights. "It's pretty amazing also to just be able to kind of revisit deep work like this," Brier marvels, acknowledging that picking up work after a break is often the hardest part.

The Voice of Genius: Grok in the Car and Beyond

While Claude Code powers his Obsidian vault, Brier also champions Grok's voice mode as a superior tool for on-the-go deep thinking. He singles out Grok 2, 3, or 4 for its intelligence and "tool calling" capabilities – its ability to integrate with other functions or search the web effectively – which he finds significantly better than competitors like ChatGPT or Gemini.

"I will fight anybody who says anything different," he declares, adding, "I just found Grok's voice mode to be significantly smarter than anybody else's." He describes it as "a podcast made specifically for you about whatever you're curious about."

Brier shares several anecdotes illustrating Grok's utility:

This ability to engage in profound intellectual exploration while commuting or driving represents a paradigm shift. "It's just I... and you know obviously all the sort of other ChatGPT and Claude and all these things of just being able to sort of like go and do research and really think and and explore things in this device that's always been useful but like not useful for deep work," he explains. "I feel like it it it's really changed my ability to do that."

AI as Bureaucracy's Bane: The "Thomas's English Muffin" Theory

Brier's current talk preparation, a detailed example he walks us through, ties together historical insights with his vision for AI's impact on organizations. The talk explores the OSS's (Office of Strategic Services, precursor to the CIA) "Simple Sabotage Field Manual" – a guide for citizen saboteurs during WWII. He highlights the manual's recommendations for white-collar workers: "always refer things to committee," "always revisit previously made decisions," "don't act with too much haste."

Brier connects this historical bureaucracy to modern organizational challenges, proposing that AI can "sidestep a lot of the bureaucracy that exists inside large organizations because it sort of has this... goo-like effect where it can kind of fit into any crevice or crack." He calls this his "Thomas's English muffin theory of AI," where AI gets into "the nooks and crannies."

This theory posits that unlike past technologies, which often forced companies to adopt new structures or centralize tools (e.g., everyone must use Jira, not Asana), AI can act as a "fuzzy interface." It doesn't care what tools or data structures teams use because "it's all just data structures to them." This allows companies to maintain diverse, decentralized workflows while AI models in the middle translate and integrate information.

He draws a parallel to Wild Bill Donovan, who started the OSS, and his emphasis on "empowering individuals" and "autonomy at the edges" – a philosophy he sees echoed in AI's potential to enable distributed, yet coordinated, work. Brier even floats a nascent idea: "bureaucracy as positional encoding," suggesting that bureaucracy, while often negative, was an innovation for large-scale operations. AI, through its ability to parallelize work (like transformers displacing sequential models), might offer a new way to achieve structure and hierarchy without the traditional rigidities.

This isn't just theoretical. The host, Dan, offers a real-world example from Every, the company behind the video. With 15 people running six different products, each with its own tech stack, AI is enabling "tacit code sharing." Instead of abstracting common functionalities (like fast file search) into modular libraries – a "heavy lift" – developers can simply use Claude Code to understand and adapt code from other product repos. "Everyone gets more productive because AI can kind of translate," Dan explains.

Noah Brier's journey into building an AI-powered second brain reveals a profound shift in how we can engage with information and deepen our thinking. By treating AI as a collaborative partner rather than just a generative tool, and by leveraging its unique capabilities to read, organize, and stimulate thought across all devices, he demonstrates a future where deep work is not only more accessible but also more profound. This isn't just about personal productivity; it's a blueprint for how AI can fundamentally reshape our intellectual processes and organizational structures, one thought, one research query, one "nook and cranny" at a time.

Based on "Two Superpowers Across the Table" from New York Times Podcasts Watch the original video

The Uneasy Summit: Trump's Beijing Trip Under the Shadow of Iran

For the first time in nearly a decade, President Donald Trump was set to meet with Chinese President Xi Jinping in Beijing. But this wasn't the triumphant return of a newly elected leader, basking in the glow of global pageantry. As Rachel Abrams from The Daily noted, the meeting on Wednesday, May 13th, of Trump's hypothetical second term, came at a fraught moment. Trump was struggling to extricate the United States from a war with Iran, forcing him to face off against China, arguably the biggest long-term threat to American dominance across technology, trade, and military power.

My colleague, David Sanger, reporting live from his Beijing hotel, painted a vivid picture of the high stakes and low expectations surrounding this critical summit. What would come of it, and more pressingly, what wouldn't?

A Weakened Hand in the Dragon's Lair

The contrast with President Trump's first visit to China in 2017 couldn't have been starker. Then, he was a freshly minted president, treated to the full spectacle of Chinese hospitality. "President Xi, I want to thank you for that incredible welcoming ceremony," Trump had declared, addressing the "chronic imbalance" in trade and pledging to protect American intellectual property. He was just beginning to shape his China policy, focusing on the nation's rise and envisioning a stronger bilateral relationship.

This time, however, Trump arrived under a significant cloud: the ongoing conflict with Iran. The summit, originally planned for April, had been postponed with the expectation that by mid-May, Iran would have capitulated. Instead, Iran was resisting, with other world leaders like Chancellor Mertz of Germany suggesting the United States had been humiliated. The Chinese themselves were reportedly "a bit mystified" by the US's struggles to secure the Strait of Hormuz or defeat what they perceived as a "second or third rate power" like Iran.

"All summits are about optics," Sanger observed, "and while I'm sure there will be all the pomp and ceremony that goes with these, the fact of the matter is he comes into this summit looking a bit weakened." This shift in perceived strength was a critical backdrop to any negotiations.

The Low-Hanging Fruit: Beef, Beans, and Boeing

With Trump's arrival, discussions inevitably began with trade and economic relationships. While the fundamental divides between the two superpowers loomed large, the immediate focus would likely be on what David Sanger termed "the low-hanging fruit."

"This is Donald Trump and his idea of a summit is to emerge with a bunch of business deals, even if they don't fundamentally change the nature of the relationship," Sanger explained. The predictable announcements would revolve around "the three Bs: beef, beans, and Boeing." These distinctly American exports—soybeans, aircraft, and specialty beef—were items China often purchased anyway. They offered President Trump tangible "deliverables" to present to the American people, allowing him to declare "the biggest purchases ever," even if they were essentially commodities.

The true test, however, lay in the more contentious "T": tariffs. China had been a primary target of Trump's tariff regime, making it a dominant discussion point. Yet, Xi Jinping likely felt he held a strong hand. China had previously demonstrated leverage by cutting off rare earths and magnets to the US in retaliation. Moreover, recent US Supreme Court and trade court decisions had forced the repayment of some collected tariffs and challenged the president's ability to impose sweeping duties.

One specific tariff issue of significant concern to China was the 100% tariff on Chinese cars entering the US, notably imposed by Joe Biden during his tenure. While China had globally exported 7 million cars last year, a million of which were destined for the US in Trump's first term, the American market was now largely closed. Despite China's push, a deal on this front was unlikely. The threat Chinese car production posed to American automakers mirrored the challenge Japan presented decades ago, making a significant concession politically unfeasible for the US.

These immediate trade tensions, while important, often overshadow the "much more fundamental divides" that truly define the US-China relationship.

The Core Divides: A Battle for Global Dominance

Beneath the surface of trade deals and tariff disputes lies a profound "death struggle" for global dominance. President Xi Jinping has openly declared his ambition for China to be the world's number one military, economic, political, and even cultural power by 2049. The central question for the United States, as Sanger articulated, is "how do you deal with a country that's trying to displace you as the world's number one power?"

The Nuclear Arms Race

One of the most concerning areas of this competition is nuclear weapons. For decades, China maintained a "minimum nuclear deterrent" of 100-200 weapons. However, under Xi, a massive buildup began, largely unnoticed by the US until years later. Today, China possesses approximately 600 nuclear weapons, with Pentagon estimates projecting 1,000 by 2030 and parity with the US and Russia by 2035.

This rapid expansion takes on critical significance following the expiration of the last remaining arms control treaty between Russia and the United States. President Trump, rightly, insisted that any new treaty must include China. Yet, the Chinese have firmly stated their disinterest in arms control discussions until they achieve an arsenal comparable in size to the US and Russia, refusing to negotiate from a perceived disadvantage. Trump's stated intention to raise nuclear arms control with Xi was therefore unlikely to yield much progress.

The Taiwan Question

Taiwan remains a perennial flashpoint. President Xi's objective is to subtly shift US policy, making Taiwan more doubtful of American aid in the event of a Chinese takeover. This often manifests in seemingly minor "wording changes" in diplomatic language. For instance, American officials typically state they "would not support Taiwan declaring its own independence." The Chinese, however, desire a shift to "oppose," a word carrying immense diplomatic weight, implying US recognition of the People's Republic as the sole legitimate China and opposition to any challenge to that claim.

Despite the critical importance of Taiwan—a major producer of advanced semiconductors through Taiwan Semiconductor Corporation (TSMC), essential for the AI revolution—President Trump has historically shown reluctance to fully engage on the issue. This creates a potential opening for Xi, who might offer guarantees on chip supply in exchange for a less robust US stance on the island's broader autonomy.

The AI Arms Race: Uncharted Territory

Perhaps the most urgent and least understood challenge is the race for artificial intelligence dominance. The current discussions between world leaders on AI are "pretty limited and pretty superficial," Sanger noted. Even basic agreements, like ensuring humans, not AI, control nuclear weapons, took months to negotiate during the Biden administration. The goal is to establish new forms of arms control for AI, recognizing that traditional methods of counting and inspecting physical weapons don't apply to algorithms and code. These would largely be "codes of conduct," inherently difficult to enforce.

Both the US and China are locked in a fierce competition to "win the AI battle," making them hesitant to implement restrictions that might hinder their own growth. Yet, the need for guardrails is undeniable. This urgency was underscored by the recent emergence of "Mythos," Anthropic's advanced AI product, which was deemed so effective at conducting offensive cyberattacks—instantly finding vulnerabilities in utility grids and infrastructure—that it was withheld from public release. While Mythos could also be used defensively, China is undoubtedly developing similar large language models, likely just months away from their own version.

This prospect deeply worries the administration, but a significant concern among American China experts is that top officials, distracted by the Middle East conflict, are "ill-prepared" to tackle these complex AI issues.

The Shadow of Iran

The ongoing war in Iran fundamentally altered the conditions for this summit. President Trump had envisioned a swift resolution, with Iran capitulating and the Strait of Hormuz reopening. None of these outcomes materialized.

The Chinese have a profound economic interest in resolving the conflict, with over 30% of their oil and gas transiting the Strait of Hormuz. The soaring energy prices exacerbated by the war were devastating many Chinese enterprises, already struggling from a domestic economic slowdown. Trump would undoubtedly press Xi to stop supplying targeting data and technology to Iran for their missiles and interceptors. He would also urge China, as a major purchaser of Iranian goods, to use its influence to persuade Iran to reopen the strait. It remained to be seen whether the cautious President Xi, despite his strong interest in ending the war, would quietly intervene on the US's behalf.

Defining a "Win" in a High-Stakes Game

Given the complexity and urgency of these issues, what would constitute a "win" for each leader at the end of the day?

For President Trump, a win would likely be measured in tangible business deals, allowing him to return home and declare success as the "dealmaker-in-chief." This narrative, however, would sidestep the deeper, more fundamental questions of power and influence. It would also fail to address the perception, particularly after the Iran conflict, that the United States might not be as invincible as some leaders once believed.

For President Xi, the game is a longer one. He has little interest in individual deals beyond their utility in "greasing the wheels of diplomacy." Xi's primary objective is to demonstrate that China is the more stable, reliable power on the global stage. As he recently said in a veiled swipe at Trump, China is "not invading other countries or following the law of the jungle." His long-term plan is to show that the world will increasingly depend on Chinese power and capital to rebuild and establish new trading relationships. In this context, Xi might also seek to highlight any perceived lack of a coherent, long-term strategy from the United States.

Ultimately, this summit was less about immediate breakthroughs on the thorniest issues and more about a demonstration of strength, or perceived weakness, on a global stage where two superpowers are engaged in a relentless struggle for the future. The real outcomes would likely unfold not in the press conferences, but in the quiet shifts of diplomatic language and the strategic maneuvering that continues long after the leaders have departed Beijing.