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Does the Universe Have Higher Dimensions? Part 1
Science News, Physics, Science, Philosophy, Philosophy of Science
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The Dig
As you would imagine, a lot of the things you can do in a comedy game just don’t work when trying to remain serious. You can’t cover up a bad puzzle with a funny line of self-referential dialog. Er, not that I ever did that. But anyway, it was also a challenge to maintain the tone and some semblance of a dramatic arc…
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Difficult math is about recognizing patterns
Jeff Bezos tells a great story about the smartest guy he knew at Princeton. He and a classmate were working on a really tough partial differential equation and getting nowhere. They spent 3 hours on the problem and gave up.
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Emacs Tramp over AWS SSM APIs
Cattle not pets The majority of AWS EC2 I need to operate these days are members of Kubernetes clusters. For remote access to them I’m more commonly authenticating to the Kube API to spawn a privileged ephemeral debugger pod rather than accessing the host directly. I have little need for host access even for the…
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PiDP-11 – Recreating PDP-11/70 with Raspberry Pi
The PiDP-11 is a modern replica of Digital Equipment Corporation’s influential PDP-11 minicomputer. Before, we had a computer on every desk and in every home–and long before they were in every pocket–computers were large, intimidating, and locked in special rooms at universities and corporations. The PDP series paved…
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Helping to secure internet routing
The internet works reliably, in large part, on the basis of a key technology called Border Gateway Protocol (BGP). BGP is a means by which all junction points on the internet (routers) communicate with each other to dynamically establish the correct (and correctly weighted) paths that network packets should follow to…
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Android emulator abused to introduce malware onto PCs
Attackers have compromised the software distribution system of BigNox, developer of a popular Android emulator for PCs and Macs.
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My first Z80 assembly language program
I was 9 years old. A revision of the notebook containing my first Z80 assembly language program
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Resurrecting Fortran
We have finished the first chapter on a long journey of resurrecting Fortran: forming an initial core community of developers and users with enough momentum around the new Fortran website and projects at fortran-lang.org . There is still have a long way to go to, but this was a necessary (although not sufficient)…
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ChaosDB Explained: Azure's Cosmos DB Vulnerability Walkthrough
This is the full story of the Azure ChaosDB Vulnerability that was discovered and disclosed by the Wiz Research Team, where we were able to gain complete unrestricted access to the databases of several thousand Microsoft Azure customers.
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8 Bits of history: My first game is still available on the internet
Smackeyackys excellent adventure I was somewhere around eight or nine when the 8 bit era of personal computers started getting into action....
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Go HTTPS Servers with TLS
This post is a basic introduction to running HTTPS servers and clients in Go using TLS. It assumes some familiarity with public-key crypto. Feel free to check out my earlier posts about RSA and the Diffie-Hellman Key Exchange ; TLS uses the elliptic-curve version of Diffie-Hellman. I won't be covering how the protocol…
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Mike Levin on using bioelectricity to study how cells form (2019)
By Lindsay Brownell At first glance, the lab of Wyss Associate Faculty member Mike Levin looks like any standard biology lab: graduate students in white lab coats pipette liquids into tubes at benches surrounded by centrifuges, freezers, racks of graduated cylinders hanging over sinks, and shelves of petri dishes…
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Foraging humans, mammals and birds who live in the same place behave similarly
Foraging humans find food, reproduce, share parenting, and even organise their social groups in similar ways as surrounding mammal and bird species, depending on where they live in the world, new research has found.
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Project Deluge: Xbox and Dreamcast
Project Deluge (Lot Page) Project Deluge - Microsoft Xbox (List) Project Deluge - Microsoft Xbox (Matched List) Project Deluge - Sega Dreamcast (List) Project Deluge - Sega Dreamcast (Matched List) Discuss this release on our Discord server!
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Hypertext Tools from the 80s
The pre-internet era was full of wonderful and very powerful systems that are well forgotten now, but we definitely can learn from them, try to understand why we had an enormous degradation in the 1990s and 2000s, and why we are enjoying hypertext systems renaissance now.
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Building My Own Yahoo Pipes
Pipes has been dead since 2015 or so, but I used it for a long time and it was essential to my daily news intake, so I’ve been building a personal ...
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Prefix sum on portable compute shaders
This is a followup to my previous post, prefix sum on Vulkan. Last year, I got a fancy algorithm for this problem running well on one device. This time, I will dive into the question of how to make it work well across a wide range of devices. The short answer is, it can be made to work pretty portably on Vulkan and…
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Erlang/OTP 24 Release Candidate 1
The official home of the Erlang Programming Language
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Probably Approximately Correct – A Formal Theory of Learning (2014)
In tackling machine learning (and computer science in general) we face some deep philosophical questions. Questions like, “What does it mean to learn?” and, “Can a computer learn?” and, “How do you define simplicity?” and, “Why does Occam’s Razor work? (Why do simple hypotheses do well at modelling reality?)” In a…
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Measuring memory usage in Python: it’s tricky
Measuring your Python program’s memory usage is not as straightforward as you might think. Learn two techniques, and the tradeoffs between them.
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Postgres text search: balancing query time and relevancy
How do you balance query time and relevance with Postgres text search? Stephen Gutekanst, an engineer working on Sourcegraph's API docs feature, shares tips for stirring code analysis with search indexing.
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Why query planning for streaming systems is hard
Many groups are working on running sql queries in incremental/streaming systems . Query planning in this context is not a well understood problem. This post is a quick pointer towards the many open problems. It's not intended to be complete or authoritative, because I haven't engaged with the problem much beyond…
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Rules of Storytelling for Fundraising
As a Founder, you are the Chief Storyteller. Here are the storytelling methods we have observed in pitches that motivate VCs to invest.
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I almost quit caffeine in one year
A holding company for strategic investments