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orbifold

3,658 karma · joined February 19, 2014

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orbifold··on Europe Is Ready for Its Own Army (2019)
Well other big European projects like the HBP turned out less than ideal. If any of the past track record is an indication any EU led project will be a huge political mess, with ~20% going to administrative overhead and only 1/10th of the promised budget will actually materialise.
orbifold··on A new obstacle to landing a job after college: getting approved by AI
They reach out to people regularly based on their GitHub profile for example.
orbifold··on Computational Power Found in the Arms of Neurons
For those of you that want to be horrified / amused by code, check out the materials and methods of the article itself. It contains a link to the full source code used to generate the modeling figures:

https://senselab.med.yale.edu/ModelDB/showmodel.cshtml?model...

The simulator used is called Neuron. Code for it is written in a custom language called Hoc and models are implemented in yet another domain specific language. Hardcoded parameters galore including whole sections of code that are prefaced with: this has been copied from this other publication.

https://senselab.med.yale.edu/ModelDB/showmodel.cshtml?model...

The dendritic tree geometry is specified as hardcoded set of point and branch declarations

https://senselab.med.yale.edu/ModelDB/showmodel.cshtml?model...

(apparently that morphology was reconstructed from imaging data?)

orbifold··on Why the foundations of physics have not progressed for 40 years
In science as in pretty much any other discipline you should always weigh someones opinion by their believability / credibility. The credibility of someones opinion on something is a function of their knowledge / experience of the subject and things related to it. To first approximation most sceptics have close to zero credibility making claims about string theory, as they have not produced scientific output remotely comparable to proponents of string theory. This is simply because people like Witten tower far above most other working theoretical physicists.
orbifold··on Why the foundations of physics have not progressed for 40 years
This is not a very original recommendation. In fact a major selling point of String Theory is that one can manage to derive both Einstein's Field equations and quantum field theory scattering amplitudes from its equations. This approach is currently the only one that can claim that for itself. Of course people like Hossenfelder never made an effort to understand String Theory in detail, so they can only make first order observations about the current state of the field.

It is also not true that no progress has been made in the understanding of String Theory in the last 40 years and it still seems like the best bet that could eventually generate a fundamental theory. What is missing is still a lot though:

- We don't seem to possess the correct mathematics to develop a non-perturbative formulation of String Theory and there are too many potential string backgrounds that we could expand around.

- It is also hard to derive the matter content of low energy effective actions from most brane configurations.

String theory provided major insight into non-perturbative quantum field theory as well. There is tons of examples, let me highlight one of them: The discovery of the Amplituhedron (Arkani-Hamed et al., 2012) was preceded by the discovery of the BCFW recursion relation (Britto et al., 2005), which in turn was motivated a relationship between perturbative Yang-Mills theory and the instanton expansion of a certain string theory in twistor space (Witten, 2003).

orbifold··on Work on these things
I don't know where you get the idea from that France had bad institutions, but I can not disagree more. They have a long track record of stellar institutions, most of the continental law tradition was modelled after the French 'code civil' implemented at the beginning of the 19th century. The grand Ecoles produced excellent scholars and administrators as is also evident from the scientific output in the 19th century, only rivalled (surpasses) by England and Germany.

It was well understood also that any European bureaucracy would be dominated by Frenchmen, because they simply were the best.

orbifold··on Linus Torvalds: Linux Scheduler Not to Blame for Google Stadia Port Issues
My ping to google.com is 9 ms at home and around 5 ms at work.
orbifold··on How the U.S. betrayed the Marshall Islands, kindling the next nuclear disaster
That also seems like a great way of some more bomb testing coming your way.
orbifold··on Bazel 2.0
I think it entirely depends on how you use tools. Where I currently work people decided that it would be a great idea to extend waf (another niche build system) with all kinds of features. If you ever worked with waf you can probably imagine how bad that can turn out. As long as you stick to bazel’s default features and don’t start to extend it, I’ve found it really pleasant to use especially for C++ and python projects (where you want to expose C++ libraries to python as well). If you start to extend it it can probably become horrible really quickly. The only experience I have with that are abortive attempts at integrating system verilog tools (turned out to be hard) and integrating a custom GCC toolchain (worked fairly well)
orbifold··on How Smartphones Betray Democracy
In the main station of the city I live in there literally are two access points called 2.4 GHz survey and 5 GHz survey.
orbifold··on How Smartphones Betray Democracy
Just to be clear, if you were in China and made these kinds of comments about Chinese police online, more likely then not you would end up in a much worse situation, if you didn't use appropriate counter measures.
orbifold··on Stamping Out Online Sex Trafficking May Have Pushed It Underground
Yeah I mean she is a pathological liar, she stated publicly twice that she had an abortion and admitted decades later that in fact she didn't. She also evaded taxes by keeping a bank account in Switzerland and paid employees of EMMA far worse than the common market price, all while renting a huge publicly owned property in cologne for the magazine for almost nothing.
orbifold··on Stamping Out Online Sex Trafficking May Have Pushed It Underground
Perhaps the most prominent feminist in Germany (Alice Schwarzer) is vehemently against it, although not for the stated reasons of the gp.
orbifold··on India builds detention camps for up to 1.9M people not on citizens register
There was mass forced migration when the partition happened, so there might have lived more than 23% non-Muslims on Pakistan’s territory before.
orbifold··on Peter Thiel at Center of Facebook’s Internal Divisions on Politics
It will be remembered as the largest intellectual garbage heap in history. I feel sorry for the people that actual use it to share personal photos and memories. It would be like printing your family pictures in the Daily Mirror.

Garbage Meme - Last Picture of your Ant Muriel 5 years ago - Avocado Advertisement

orbifold··on If Logged into Facebook, Oculus VR Data Will Now Be Used for Ads
I mean sure, that is why Computer Vision research at Facebook doesn’t have multiple papers on scene segmentation and understanding, where they take kitchen scenes for illustration. Your all in one home appliance spying device surely wouldn’t be used in such a way. Of course. Not to mention that in all likelyhood both the microphone and camera are hot while using WhatsApp or Facebook.
orbifold··on Self-driving truck delivers butter from California to Pennsylvania in three days
Shortage of a certain type of labor is just an indicator that it doesn’t pay enough. I’ve also got a shortage of Tesla in my garage.
orbifold··on Simple Rules ‘Bootstrap’ the Laws of Physics
David Tong‘s lecture notes are pretty good: What I am talking about is covered in lecture 7: http://www.damtp.cam.ac.uk/user/tong/string/seven.pdf
orbifold··on Simple Rules ‘Bootstrap’ the Laws of Physics
There is a nice derivation of Newton’s law from quantum field theory in Zee‘s book „Quantum Field theory in a nutshell“. You can also arrive at Einstein’s field equations by deriving the beta function of bosonic string theory and (2-2 scattering to be precise) and requiring that it is constant.
orbifold··on What Did the U.S. Get for $2T in Afghanistan?
It did sort of work for Germany and the First World War.
orbifold··on Steve Jobs: Out for Revenge (1989)
The infotainment System is also otherwise known as a radio and navigation system. VW does those well enough and it also integrates with car play and android auto.
orbifold··on AI Dungeon 2 costing over $10k/day to run on GCS/Colab
The server instances are free though, google only charged them for the datatransfer to those instances.
orbifold··on How to write better game libraries
It actually extremely easy to write C++ wrappers for other languages. Examples I‘m familiar with are pybind11 (similar to boost python) and the node C++ API. That other languages don’t have similarly convenient libraries is entirely their own fault.
orbifold··on A new way to make quadratic equations easy
There is nothing new about this formula or derivation. In fact this precise formula (including that derivation) is taught in Germany.
orbifold··on New membrane unlocks energy from chemical difference between fresh and saltwater
If you use a small membrane there will be basically no way that a sufficiently large gradient between the two sides exist to produce meaningful amounts of electricity. This article is total bullshit even if the material science is nice.
orbifold··on Ask HN: Where are some low budget and good CS College?
I would say that under almost all circumstances it would be better to study in Europe if you can. German universities are free and pretty good (LMU and KIT for compsci for example). The cost of living is comparable. Even favoring the ~1 year of language course that you would need, you would be far better off financially.
orbifold··on Spain planning on going ahead with ‘Google tax’ despite US tariff threats
In fact rumor has it that a major reason for the Brexit campaign was that there was a threat of very costly corporate tax loopholes being closed in new EU wide legislation.
orbifold··on A Reality Check on Quantum Computers
I think he is well aware of this. The current quantum device Google build is however not much different than a sufficiently complex other physics experiment and so far they have not been able to demonstrate that it is capable of fault-tolerant error-corrected computation (which they basically won't be able to do in the foreseeable future).
orbifold··on Metaflow, Netflix's Python framework for data science, is now open source
Thanks for open sourcing this! This seems like precisely the kind of tool I‘ve been looking for. One thing that would be really great is support for HPC schedulers like SLURM. It seems relatively straightforward to add, so I might give it a shot myself.
orbifold··on Corporate debt nears a record $10T, and borrowing binge poses new risks
I think that still is more or less a polite way of saying that American banks found suckers in Düsseldorf and Frankfurt to sell to. Sometimes in multiple steps: First sell to Deutsche Bank, they sell to suckers in Düsseldorf.
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