Sean Treleaven

Hey Twitterverse, I wrote an article called "Through the Mirror World." I hope you like it and maybe even find it useful. streleav.medium.com/through-the-mi…

I'm not getting much out of this platform. Never really have. In fact, I think it's probably a net-negative for me. Gonna try to reduce my time here.

@KirkLubimov This is a shitty-ass tweet on several levels. Not my Canada. Fuck you.

Notice to Canadians; You will not be insulted. What you see happening in Europe and you saw happened in Bondi Beach, Australia will be happening in Canada soon enough. And once the government finishes confiscating your guns, you will too only be able to watch your countrymen and women be shot by terrorist only having a cell phone in your hands. Don't let weak politicians destroy and surrender your future. It's across all Party lines. Time to wake up.

While I don't think there's any recourse, but I'm starting to believe the Aqualini-is-a-cancer-to-the-Vancouver-Canucks theory. My. Fuckin. God.

Gm peeps. Had a friend pass away yesterday. Always be grateful.

@farhadomid @JerryHan_og Read my blog and you will see the tip of the iceberg.

@JerryHan_og @streleav How would you go about scaling? Would there be Isaac Sim or Unreal Engine involved?

I pulled a random street from Google Maps. Turned it into a 3D world with World Labs. Dropped a Unitree G1 into it and hooked it up to our server-side MuJoCo setup. Now the G1 is actually walking around a real Malaysian street in my browser. Three.js is doing the rendering. MuJoCo is running the physics and walking policy on the server. A simple WebSocket keeps everything locked together. Real street → 3D world → server physics + policy → live control in the browser. Kinda feels like cheating. Physical AI is getting wild. Huge shoutout to @theworldlabs. Marble makes this stuff way too fun. #robotics #MuJoCo #WorldLabs #simulation #unitree #sim2real

Reasons AI world models don't "scale": - 3DGS is not efficient for rendering nor download size - 3DGS does not support dynamic lighting nor physics nor nav meshes - AI world models don't support "offline rendering" (eg streaming tiles) - to make an AI world model of Earth, do we just take photos of every square inch of the planet and use that to describe our planet? - no mechanism for audio - not deterministic so not good to achieve simulation training outcomes - and I'm sure other things cuz there's so much that goes into building a virtual world

@streleav @JerryHan_og Can you elaborate on why you feel that way? I’m curious where you are going here.

@joherkhan Startups are not cruel. They are completely indifferent to the entrepreneur's feelings. "It's me, hi, I'm the problem" 🤣

I meet with founders every day and sometimes feel the startup game is cruel For some, things flow. It clicks, and boom they’ve got something. For others, the road is extremely long. Years of pivots, and exhaustive grind. Not much to show. But either way you’ll meet yourself.

Re. space data centers, I haven't given it much thought, nor crunched any numbers, but we rely on undersea fiber optic cables for the intercontinental backbone of the internet. The latency in sat comms is too high. So we'll build *slow* data centers in space...?

@curiosityonx So we all start off as an IR fart? 😳

MIT scientists have observed the dynamic events that unfold at the start of life. When a sperm fertilizes an egg, it sets off sweeping waves of activity that travel across the egg’s surface.

In principle, I don't think it's AGI if you have to poke it to do something.

a16z's Big Ideas 2026 includes two sections on AI world models being interactive, gameable, etc. What a crock of shit. Not one mention of how these worlds will render at high framerates, be playable across wide areas, and many other things game devs do today to make open virtual worlds. The AI media bow wave is close to creating a vacuum back to the reality of building large-scale open worlds.

@JordanKutzer True, it wouldn't expand; just a smaller additional revenue source. Eg, Fortnite VR [prolly] doesn't make sense.

@streleav I’ve found it easier to get the attention of VR players first. My hope is that’s a first step into building experiences beyond the headset. I find it hard to see a flat experience bet to “expand” into a smaller player base. But haven’t tested this, so I could be wrong!

VR is a stage, but it's not the story. Culture didn't care about 3D animation tech, they cared about Toy Story. Culture doesn't care about VR. We need to abstract the headset away to create something that matters beyond the VR bubble.

Why the fuck isn't someone leveraging Mapillary's open, street-level imagery to generate 3D content around the world?! I've got a ton of ideas to make a shit-ton of money. All I need is a rendering guru to join me and the world will be our oyster. Hook a guy up, peeps!

In Ottawa for a few days. DM if u want to meet up and chat.

Unique perspective, love it! There's a slight catch 22 here in that, in order to hire these high performers, the founders must've convinced investors to invest so they could pay the early engineers. That implies the investors saw the opportunity first, or at least before the early employees. Regardless, the points made in the article still stand. Thx!

How do you spot a top 1% startup before it's obvious? @tmrohan and I were curious about a quiet class of employees who seem just as good as—if not better than—the most famous VCs at spotting generational companies before they blow up. How do these rare folks keep joining world-changing companies before most of the world even notices them? To find out, Terrence and I interviewed 5 people whose resumes include some of Silicon Valley’s most remarkable companies: @PalantirTech, @OpenAI, @Facebook, @Stripe, @Linear, @Figma, @NotionHQ, @SlackHQ, @Box, @Spotify, and @Dropbox. Each joined at least two of these companies early—an extraordinary feat, especially since they committed as full-time employees, not diversified investors. Their “hit rate” is phenomenal. We were curious: What did they see? How did they choose? Are there lessons to take from their experiences? Across their stories, we saw three distinct factors that mattered most: 1. Ambition bordering on “ludicrous” 3. Judging today’s product is a trap 3. Founders, above everything Though originally written for job seekers, these insights apply much more broadly—for founders, investors, or anyone trying to recognize greatness early. Here’s what to look for: lennysnewsletter.com/p/how-to-spot-… Huge thank you to @cjc @bobmcgrewai @soleio @rsms @seanrose for sharing your incredible insights with us 🙏

@lucyhargreaves4 Wow. Ripe for massive lawsuits given the generally-internationally-recognized, and de facto, standard that the presiding law is that of the country where the servers sit!

More investment in data centres is sorely needed...... but let’s be honest, data controlled by a US HQ'd company subject to the US Cloud Act doesn't help “Canadian sovereignty.” The US Cloud Act enables the US government to exert its “territorial right” to access and control any data located on servers controlled by US HQ'd companies anywhere in the world. Microsoft President Brad Smith's strategy to protect sovereignty (in his words) hinges on relying on diplomacy and legal recourse: "If ever confronted with an order to suspend or halt operations in Canada, we will pursue every available legal and diplomatic avenue - including litigation - to protect access to critical infrastructure". While I'd like to think that this would be sufficient, I'm entirely unconvinced this would deter any US administration from going after data it wanted. Meanwhile, same day, Microsoft announced $17.5B in investments to India to help that country build "sovereign capabilities".

Congrats to Messi and the rest of the Miami FC on their win of the MLS cup. Whitecaps played well and it was closer than the score indicates.

@AlecStapp Zuck didn't just bet on "immersive online worlds." He also bet, I'm guessing more so, on VR.

For a sense of scale, $77 billion is roughly equivalent to ***all US venture capital invested into startups in 2016***