Chris Jan

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Chris Jan

Chris Jan

@ceejjan

Writing to learn. Aspiring armchair economist, recovering banker. Prev: @UMengineering, @Kennedy_School

San Francisco Katılım Mart 2011
688 Takip Edilen283 Takipçiler
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Chris Jan
Chris Jan@ceejjan·
Why is there no reference to the Triffin Dilemma when discussing Trump's tariffs? It explains why the U.S. is caught in a financial paradox, and how this trade war - if taken to its end - will cause us to lose our status as the world's reserve currency, a 🧵 #TriffinDilemma
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Chris Jan
Chris Jan@ceejjan·
@zerohedge I’m in Dubai right now, at DIFC. Was scary when we first had to go shelter in place, but impressive response and just had pizza and wings delivered to DAMAC towers
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zerohedge
zerohedge@zerohedge·
In Dubai, some delivery services have been suspended as people flood supermarkets to buy water and other food essentials. Stockpiling prompted UAE authorities to issue a statement to reassure residents and the millions of expatriates that there is ample supply: BBG live blog
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Chris Jan
Chris Jan@ceejjan·
And questions about double standards, the role of the United States in policing the global order, and morals remain unanswered.
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Chris Jan
Chris Jan@ceejjan·
You can argue (rightfully) that he didn't go through the proper constitutional procedures to get approval for the raid, points off for that - but if judging by outcome, good job. It is an impressive show of military ability and competence from the United States' side. Between this and Iran, I'd be nervous to be on the wrong side of this country. I don't know what the plan is long-term. Trump has not shown an ability to thoughtfully put together let alone execute any sort of strategic plan over the long term (reference how fast he turned around on tariffs).
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Chris Jan
Chris Jan@ceejjan·
🇻🇪I give Trump an 8/10 on the Maduro operation. Maduro refused to cede power despite losing election in July 2024. The general public there is happy - 8 out of 10 wanted him gone. It is telling that we were able to extradite him so easily without any opposition (and in fact had help) from others inside the country. That we were able to remove him from power without any everyday Venezuelans being hurt is a good thing.
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Chris Jan
Chris Jan@ceejjan·
@PTrubey Through a steam turbine - we plan on retrofitting an old fission facility that already has one hooked up to the grid.
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Phil Trubey
Phil Trubey@PTrubey·
@ceejjan Interesting, but it only talks about fusion ignition. How do you harvest the energy?
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Phil Trubey
Phil Trubey@PTrubey·
This is the company that will build the world's first commercial scale fusion power plant, and it'll be done in three years. Listen to this interview with the CEO to learn more about it (skip past the first part of you already know about fission and fusion energy), but here's my synopsis of how this works and why it's unique. First, realize that most power plants, coal, oil, natural gas, and yes, even current nuclear power plants, are thermal plants. They create heat, which boils water, generates steam which runs a steam turbine to generate electricity. It's literally 100 year old technology with some efficiency updates, but the best they can do is convert 35% of the fuel energy into electricity, the rest is waste heat. The rest of the world's fusion power plant prototypes will use this same steam generator system and throw away 65% of generated energy. Helion instead uses direct energy to electricity conversion, no heat cycle engine, and can be 85% energy efficient. As an overview, it uses a giant capacitor bank to electromagnetically accelerate a fusion fuel plasma (deuterium and He-3) while also electromagnetically compressing it to a target. It does this from two different directions, colliding each beam. This magnetically compressed, fast moving and high heat plasma will fuse in milliseconds and produce new charged particles (protons) which will then push against the magnetic field. The system then bleeds the resultant energy in this much more energetic magnetic field (due to the fusion) back into its capacitor bank. This is a pulsed fusion system that runs at 100 Hz in tests (100 pulses per second), and each pulse produces more electricity than was put in. This is the only fusion technology that makes any sense to me. All the others have tons of unsolved problems. In the video below, learn about fusion energy at a more detailed level, how David runs his company (very similar to Elon), how their system can be tightly coupled with AI data centers without even needing to produce AC electricity and much more.
Lex Fridman@lexfridman

Here's my conversation with David Kirtley (@dkirtley), a nuclear fusion engineer, all about the physics and engineering of nuclear fission, fusion, and the future of energy. David is leading a team that's working to build the world's first commercial fusion power plant by 2028. This was a super technical conversation and a fascinating one, for both the near-term and the long-term future of human civilization. It's here on X in full, and is up on YouTube, Spotify, and everywhere else. Links in comment. Timestamps: 0:00 - Introduction 3:14 - Nuclear fission vs fusion 13:14 - Physics of E=mc^2 18:28 - Is nuclear fusion safe? 23:50 - Chernobyl 30:17 - Geopolitics 32:12 - Extreme scenarios 39:07 - How nuclear fusion works 1:11:59 - Extreme temperatures 1:17:00 - Fusion control and simulation 1:28:54 - Electricity from fusion 2:02:59 - First fusion power plant in 2028 2:09:52 - Energy needs of GPU clusters 2:20:16 - Kardashev scale 2:28:12 - Fermi Paradox

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Chris Jan
Chris Jan@ceejjan·
The post includes a list of 13 other promising fusion companies, and concludes with a few recommendations to help achieve fusion electricity generation on the grid by the end of the 2030s. Always keen to hear any feedback on my perspective. #laser #fusion #energy
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Chris Jan
Chris Jan@ceejjan·
I worry that the way the Iran strike happened: while within a 2 week negotiating window, decoy planes over the Pacific while 7 B-2 bombers flew from Missouri, first ever use of GBU-57s in battle (with 14 dropped) - will only strengthen the resolve of the Islamic world's hardliners, and likely convert more in the process.
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Chris Jan
Chris Jan@ceejjan·
The U.S. was supposed to be the global MVP, but Trump’s got allies playing better WITHOUT us. Ewing Theory in action: when the star’s gone, the team thrives. Who's the next to step up? #EwingTheory #Geopolitics
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Chris Jan
Chris Jan@ceejjan·
The EU’s eyeing CPTPP membership, a $15T trade bloc, as a hedge against Trump’s trade wars. Talks could wrap by 2027, adding 0.5% to EU GDP. 🇪🇺🌐 Allies are building new networks while the U.S. plays hero ball and tries to stat-pad.
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Chris Jan
Chris Jan@ceejjan·
The Ewing Theory: a team can THRIVE when its star sits. Is the U.S. Patrick Ewing, with Trump’s chaos pushing allies to shine? Let’s cover how the world has responded with the U.S. pulling a Kawhi and sitting out. #EwingTheory #Geopolitics
Chris Jan tweet mediaChris Jan tweet media
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