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Philip Koopman Blog
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13 September
9 September
26 August
From one piece Why performant code matters (but gets widely ignored), with Casey Muratori 3 beliefs, in the piece's order there
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Their words
everybody on your team who is making architectural decisions, those people must know performance and they must make decisions that will allow the other people downstream of them to use an architecture which can be optimized later. If you don't do that, you're just rolling the dice.
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when you're working with a lot of data, the the difference can be massive if you structure it in one way versus structuring another way, right? Again, architectural decisions that have nothing to do with hotspots, they're how all the data is laid out and what the access pattern is, right?
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If every uh software engineer knew to watch out for false serial dependency chains, things where they were creating series of dependent operations that could not be optimized away or other sorts of architectural problems like that that cannot be easily fixed, then the world would look more like just wait and optimize the hotspot, right?
11 August
30 July
24 July
1 July
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So a a big challenge in object-oriented programming is dividing the responsibilities because you're moving the computation to where the data is. Saying, "Well, this object does this and that object does that is a really critical decision because you want to you want the computation near to the data so that there's less coupling between them." which is a lesson that I I think uh kind of got lost in the noise. That's the fundamental design move in ob in designing object-oriented programs and I I think I stand behind that.
22 May
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korrents.com
Republican lawmakers have lost the party cohesion needed to shield a Trump ally from an impeachment trial.Their words
My guess is Republicans have lost the necessary cohesion to fall on Trump's sword and block a trial.
22 April
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And now suddenly people are building databases on top of object stores, for example. And now the replication happens at the object store level, no longer at the database level.
1 April
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none of us wanted to go through that extreme but lots of time when you are under a lot of pressure and no time to react other than just to survive that scale that keep on coming at you, you have to make uh decision that increase uh speed and velocity because speed and velocity allow us to build quick enough to survive
6 February
1 January
25 November 2025
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Because of how source survival works, or indeed, how architectural survival works, we are often encouraged to think of the past as a place populated entirely by the wealthy elite.
12 November 2025
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korrents.com
Infrastructure optimised for a single model is one architectural breakthrough away from being worthless.Their words
You can't build an infrastructure that's optimized for one model. If you do that what if you go fall behind? In fact, all the infrastructure you built will be a waste, right?
9 August 2025
20 February 2025
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The Middle East, North Africa and Anatolia are witnessing a rapid decline in coupling and fertility. This should rock your priors.
27 January 2025
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korrents.com
As AI makes code cheaper to produce, understanding and architectural design become more valuable.Their words
Thus, code is cheaper than ever, but I suspect that insight and good architectural design and understanding, at least for now, will become more valuable than ever.
20 December 2024
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o3's improvement over the GPT series proves that architecture is everything. You couldn't throw more compute at GPT-4 and get these results. Simply scaling up the things we were doing from 2019 to 2023 -- take the same architecture, train a bigger version on more data -- is not enough.
OpenAI o3 Breakthrough High Score on ARC-AGI-Pubarcprize.org
1 November 2024
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From the 1960s, US fertility fell primarily due to fewer births among couples. In that context, baby bonuses might raise fertility. But today, the major contributing factor is the decline of coupling.
11 October 2024
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Neurosymbolic AI — combining such machinery with neural networks – is likely a necessary condition for going forward.
25 July 2022
1 October 1975
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