slop shall not pass: critical analysis of origin detection
The nature of voids: I. Watershed void finders and their connection with theoretical models
The statistical study of voids in the matter distribution promises to be an important tool for precision cosmology, but there are known discrepancies between theoretical models of voids and the voids actually found in large simulations or galaxy surveys. The empirical properties of observed voids are also not well understood. In this paper, we study voids in an N-body simulation, using the ZOBOV watershed algorithm. As in other studies, we use sets of subsampled dark matter particles as tracers to identify voids, but we use the full-resolution simulation output to measure dark matter densities at the identified locations. Voids span a wide range of sizes and densities, but there is a clear trend towards larger voids containing deeper density minima, a trend which is expected for all watershed void finders. We also find that the tracer density at void locations is usually smaller than the true density, and that this relationship depends on the sampling density of tracers. We show that fits given in the literature fail to match the observed density profiles of voids. The average enclosed density contrast within watershed voids varies widely with both the size of the void and the minimum density within it, but is always far from the shell crossing threshold expected from theoretical models. Voids with deeper density minima also show much broader density profiles. We discuss the implications of these results for the excursion set approach to modelling such voids.
On Thickets, Enclosure, and Leaving
Every platform I left, I left for the same pattern: enclosure by othering — systems that define what is shameful, create targets, and point an aggressive majority at them. Substack's AI-detection turn is the latest, and it is Dark Forestry in action. The escape is spatial: go where the platforms ar…
Merge pull request #1 from darkshapes/x/dev · darkshapes/negate@5d4e591
+residual processing
Dark matter
In astronomy and cosmology, dark matter is an invisible and hypothetical form of matter that does not interact with light or other electromagnetic radiation. Dark matter is implied by gravitational effects that cannot be explained by general relativity unless more matter is present than can be observed. Such effects occur in the context of formation and evolution of galaxies, gravitational lensing, the observable universe's current structure, mass position in galactic collisions, the motion of galaxies within galaxy clusters, and cosmic microwave background anisotropies. Dark matter is thought to serve as gravitational scaffolding for cosmic structures. After the Big Bang, dark matter clumped into blobs along narrow filaments with superclusters of galaxies forming a cosmic web at scales on which entire galaxies appear like tiny particles.
Cosmic Voids and Void Lensing in the Dark Energy Survey Science...
Galaxies and their dark matter halos populate a complicated filamentary network around large, nearly empty regions known as cosmic voids. Cosmic voids are usually identified in spectroscopic...
Everything is about to “go dark”
I’m coming down from spending a few days at Usenix Security, right here in my hometown of Baltimore. This means that my days have been taken up with two kinds of conversation: first, explaini…
What Is Bluesky?—A Landscape Revealed by the Diffusion Experiment - Nightflight
Stop Clicking on Junk: How to Identify and Ignore AI-Generated Slop Today
The internet is slowly being flooded by AI slop. What is it and how can you avoid it?
Dark Factories: Rise of the Trycycle – Dan Shapiro's Blog
Companies are now producing Dark Factories – engines that turn specs into shipping software. The implementations can be complex and sometimes involve Mad Max metaphors. But they don’t have to be like…
darkshapes/ati
Automated Training Interface : standard endpoint layer for computer-led training and inference parameters
AI Slop Is a Brute Force Attack on the Algorithms That Control Reality
Generative AI spammers are brute forcing the internet, and it is working.
Six ‘dark patterns’ used to manipulate you when shopping online
Online shopping offers unparalleled convenience, but also poses significant risks due to manipulative design practices known as ‘dark patterns’. These tactics subtly influence consumer behaviour, often leading to unintended purchases or compromising consumer privacy. Here are six dark patterns to watch out for next time you are shopping online.
