rkallos (u/rkallos) - Readit News

rkallos commented on Being overweight overtakes tobacco smoking as the leading disease risk factor scimex.org/newsfeed/being... · Posted by u/giuliomagnifico

tayo42 · a year ago

I'm kind of curious if there is any diet or nutrition related book that would score high on scientific accuracy. The field in general seems hard to study well.

If any commenting pass-byers know of any, let me know, id be interested.

rkallos · a year ago

Dr. Michael Greger's books (and website: https://nutritionfacts.org) boast an astonishing amount of citations of medical studies. He readily acknowledges the vast volume of literature around nutrition, with more and more studies being published every year. He and his volunteers have taken on the mission of wading through it and making sense of it.

His books, in order of publication:

- How Not to Die (2k citations) - How Not to Diet (5k citations) - How Not to Age (13k citations)

rkallos commented on Engineering Sleep minjunes.ai/posts/sleep/i... · Posted by u/amin

pella · a year ago

A Gut Bacteria" is also a rather interesting approach to solving sleep problems. Does anyone have experience related to this?

"The company ( FitBiomics ) has already commercialized two products. Their flagship offering, V•Nella, helps metabolize lactic acid and reduce fatigue, while Nella targets sleep health - a crucial market considering that 100 million Americans suffer from insomnia. "Within 10 to 14 days of daily consumption, consumers feel the difference," Scheiman notes. "They have less daily fatigue interfering with their daily life, more energy, and some people are tracking cardiovascular benefits on their wearables. We hear really cool anecdotal feedback like, 'Hey, I no longer have to take a nap in the middle of the day, or I no longer need coffee in the middle of the day.'"

https://archive.md/XOmx5#selection-827.0-839.405

rkallos · a year ago

I experienced a similar change (more energy and steadier energy levels throughout the day) after switching to a plant-based diet, which has been shown to change one's gut microbiome over a few weeks.

rkallos commented on Data Modeling with Sums and Products funktionale-programmierun... · Posted by u/markusschlegel

juancn · a year ago

The sum/product dichotomy is very confusing. Sums and products are operations in muggle math (functions), but in the example a product is a data type? It feels off.

It's not intuitive at all and so far removed from normal programming practice, the terminology doesn't help.

It's the overload of concepts that makes it harder to grasp.

rkallos · a year ago

I find it very intuitive, but maybe it's because of a missing link or two.

Boolean arithmetic sometimes uses + for OR and * for AND. When considering only zero and non-zero values, the semantics are the same. 1 + 1 + 0 is non-zero, 1 * 1 * 0 is zero. Substitute + for OR and * for AND, and you wind up with the "same" result.

From the linked article:

> one is „and data“, the other is „or data“.

Structs/records/product types fit the description of "and data", because it's a compound value comprised of this type AND that type AND that other type, etc.

Unions/sum types fit the description of "or data" because it's either this type OR that type OR that other type.

rkallos commented on XMPP: The Gem of Instant Messaging adele.pages.casa/md/blog/... · Posted by u/todsacerdoti

ptman · a year ago

Please elaborate. Why? What is it using now?

rkallos · a year ago

They switched to microservices written in Kotlin, resembling the rest of their backend stack. They had an easier time hiring and retaining Kotlin developers than Erlang/Elixir developers.

rkallos commented on XMPP: The Gem of Instant Messaging adele.pages.casa/md/blog/... · Posted by u/todsacerdoti

dogleash · a year ago

There are good clients. Whatsapp, Grindr, Kik, League of Legends, Fortnight, Eve Online.

They have something in common though: not letting users communicate outside their own ecosystems.

rkallos · a year ago

For what it's worth, Grindr's chat hasn't been powered by XMPP since April 2024.

rkallos commented on 52,000-year-old woolly mammoth chromosomes reconstructed from 'jerky-like' skin abc.net.au/news/science/2... · Posted by u/speckx

ourmandave · a year ago

The caps are melting and some people are all in on bringing back the woolly mammoth.

How about the woolly rhino while we're at it? Maybe open a zoo in Death Valley to house 'em.

rkallos · a year ago

Woolly mammoths were a geoengineer species that have no living proxy. Bringing them back is definitely a controversial project, but there's a case to be made that de-extincting the woolly mammoth could help prevent permafrost from melting.

rkallos commented on Flame Graphs: Making the opaque obvious (2017) tech.popdata.org/Flame-Gr... · Posted by u/davikr

PreInternet01 · 2 years ago

OK, shameful confession time here: I just cannot grasp flame charts, no matter how hard I try. And yes: that's just me, I'm dumb, etc. etc. (and I freely admit all of that, including the et-ceteras!)

I tried to follow along with things that are relevant to my job, like https://randomascii.wordpress.com/2016/09/05/etw-flame-graph... ...And totally failed? I look at the reddest part of the chart, I look at the peaks, and none of that matches the conclusion reached in the blog post?

And then I tried to grok all the knowledge conveyed in https://www.brendangregg.com/flamegraphs.html and... came away similarly confused? Sure, I see patterns, but when asked to identify which of those patterns indicate problems, I would still score <50%?

And, I mean, I do memory/CPU traces like all day every day, and I fix code all the time based on that, but that's all just based on hierarchical bar charts, which are NOT the same as inverted flame graphs, as far as I can tell?

Anyway, thanks for coming to my therapy session, and feel free to leave your helpful-comment-that-will-finally-enlighten-me and/or downvote at the door.

rkallos · 2 years ago

> I look at the reddest part of the chart, I look at the peaks

Neither of these are really the places I look at when examining flame graphs. I tend to look at the bottom, and work my way up.

The key thing (imo) to look for are wide pieces that are not a core part of what the code you're profiling is supposed to do.

In the first example of your first link, you have a flame graph of code that seems to draw an image. There are a bunch of functions like 'CopyPixels' and 'RasterizeEdges'. Those seem to be a core part of drawing an image. In contrast, there's a 'KiPageFault' function that's pretty wide that does not seem to be important to the code's overall goal. I think a bit more context is needed to arrive at the author's conclusion, though.

I think flame graphs, like all graphs, are more helpful when the reader has a lot of context about what's supposed to happen, or some intuition about how the chart is supposed to look.

rkallos commented on Fifteen Fundamental Properties (2022) camillovisini.com/writing... · Posted by u/camillovisini

rkallos · 2 years ago

These properties are explained in great detail in volume 1 of Christopher Alexander's The Nature of Order.

Reading about these with accompanying images of spaces or objects demonstrating the presence or absence of these properties is what made it stick for me.

rkallos commented on Grindr Tells Unionizing Workers: Move Across the Country or Be Fired vice.com/en/article/qjv3g... · Posted by u/treldorian

rkallos · 2 years ago

Here is Grindr's unionization website: https://grindrunited.org/

rkallos commented on Stoicism is not enough simonsarris.substack.com/... · Posted by u/lawrenceyan

rkallos · 3 years ago

Marcus Aurelius's Meditations is a wonderful guide on how to apply various principles of Stoicism, especially principles around cultivating resilience in the face of circumstances beyond one's control.

However, to read only Meditations and go on to make claims about the philosophy as a whole is a bad idea that ignores hundreds of years worth of philosophers who also contributed to Stoicism.

For those interested in a more broad treatment of Stoicism, a wonderful follow-up to Meditations is Donald J. Robertson's Stoicism and the Art of Happiness