Joined June 2013
27 Photos and videos
Hi folks, checkout this iOS markdown renderer Copilot team is open sourcing! We built it to make LLM streaming smooth and fast. It also works for any Markdown content. Give it a spin and tell us what you think. Issues and PRs welcome! github.com/microsoft/SwiftSt…
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Checkout this iOS markdown renderer Copilot team is open sourcing! We built it to make LLM streaming smooth and fast. It also works for any Markdown content. Give it a spin and tell us what you think. Issues and PRs welcome! github.com/microsoft/SwiftSt…
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Think of the company as a neural net where coding velocity is the weight of a neuron. Now was anyone actually be able to estimate the gradient before assuming 10x coding velocity translates to 10x company output? This narrative is severely flawed from the very beginning.
We keep hearing about 10x or 100x productivity gains in engineering and knowledge work. But outside the model labs, I haven’t seen the corresponding 10-100x revenue growth across the market or increase in quality. So where is the productivity going?
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A tale in two parts
9 Jun 2025
Did anyone call in sick today? 🤔just asking
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One of the reasons why big organizations are inefficient is that you need to spend a lot of effort to justify why you should do xyz, even when there are many occasions where your brain has already worked out the right answer , aka intuition.
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By going through paperworks and reasoning again on these conclusions you might get distracted or even deviated from the original right path, leading to slow or incorrect execution.
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25 Aug 2025
I’m sorry but Dara is the guy who laid off the entire Uber self-driving org like 8 years ago and the only reason he starts to talk about self-driving tech now is because the maturity of the tech came much sooner than he had expected and his business will be at existential risk.
Uber CEO on Tesla using Camera Vision over LiDAR: “I think in the near-term it’s going to be very difficult, and @elonmusk would tell me I’m wrong, and never bet against him, but it’s my instinct — in the near-term it’s going to be very difficult to build a camera only product that has superhuman level of safety. Will it be possible? Quite possibly yes. If you can have instrumentations that include cameras and LiDAR ; the cost of Solid State LiDAR is only $400-$500— WHY NOT include LiDAR as well in order to achieve superhuman safety. So, possible? Yeah it will be — I don’t know when, but is possible the better product? I’m not sure. All of your partners right now are using a combination of camera, Radar and LiDAR, and I personally think that’s the right solution— but I could be proven wrong.”
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Jun retweeted
13 Jul 2025
Here is most of what I’ve gathered on the Windsurf / Google Deal The founders and dozens of engineers are going to Google. This group, along with the preferred shareholders will be sharing the $2.4B headline number. The exact split is unknown but investors are making some money on the deal and the founders plus this select group are making a ton. That brings us to the hundreds of employees that aren’t going to Google. From what I’ve heard they are all getting screwed regardless of their vesting status. Their consolation prize is that they now own 100% of the original company. Windsurf’s leadership is making the argument that this is a win for those that aren’t joining Google. Their claim is that Windsurf still has a meaningful amount of revenue and a solid balance sheet. But Windsurf will now be facing intense competition from not only its former founders and engineers who are now at Google, but every other company in code gen that they were already completing with / losing to (Cursor, Anthropic, etc). Given that Google now has a license to the core technology, it is safe to assume that the Windsurf will struggle and on a longer time horizon will be a zero. 

This structure appears to be very similar to Google’s deal with CharacterAI. Google effectively acquired Noam Shazeer and left CharacterAI employee owned. The difference there is that Google had no desire to compete in AI companionship, they just wanted Noam and some key people. Windsurf is a left in a much worse position. 

My read is that the Windsurf leadership team was desperate to find a way out and facing competition from the labs and Cursor structured a deal to benefit themselves. Why they thought they could structure a deal like this and get away with it is anyones guess. At this point, I imagine all the parties involved are scrambling to try to find a resolution because if things stay as they are, it will be a massive stain on the industry. We will probably see some more facts come out in the next 24 hours. I hope that Windsurf’s founders work quickly with all parties to properly take care of their team.
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9 Jun 2025
Did anyone call in sick today? 🤔just asking
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10 May 2025
Seriously why hasn’t anyone opened an x account named “cringe posts from xAI employees”?
9 May 2025
Replying to @hyhieu226 @xai
That’s sad
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26 Feb 2025
Slack is down, time to do some real work.
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11 Jun 2024
Migrate to MVVM(x) before your app becomes unresponsive.
SwiftUI's View protocol is now @MainActor annotated (which it should have been all along). This is great, but it does mean that async functions that you've added to your views will suddenly run on the main actor instead of the global executor (on a background thread). To change this, mark any async functions you add to your views as `nonisolated` so that they aren't isolated to the main actor. Learn more about where code runs in Concurrency here: donnywals.com/how-to-determi…
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20 Mar 2024
As I will be joining Microsoft AI and starting a new chapter, it's important to do a retro on some of the highlights while building @pi mobile apps:
Today at Inflection we are announcing some important updates. A new phase for the company begins now. Read more here: inflection.ai/the-new-inflec…
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20 Mar 2024
It obviously cannot scale and has caused a lot of problems. I successfully transformed it into a highly modularized codebase using the Swift package, Swift concurrency, and MVVMI. It becomes more maintainable, and unit-testable, and we can iterate much faster with it!
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20 Mar 2024
Building @pi is an unforgettable experience with a lot of sweat & grinding. It undoubtedly elevated my engineering skills to the next level. While I'm grateful for it, I'm also super excited to see what's upcoming in the Microsoft AI team!
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