Readit News logoReadit News
techbro92 commented on Louisiana cancels $3B coastal repair funded by oil spill settlement   apnews.com/article/louisi... · Posted by u/geox
metabagel · 2 months ago
There’s no such thing as a “Dem”. Use the proper name for the party, not a pejorative shorthand.
techbro92 · 2 months ago
I dont see how thats pejorative
techbro92 commented on Sguaba: Hard-to-misuse rigid body transforms for engineers   blog.helsing.ai/sguaba-ha... · Posted by u/lukastyrychtr
techbro92 · 3 months ago
I just found a subtle bug caused by a vector expressed in the wrong coordinate frame. Been thinking a lot about something like this
techbro92 commented on We Made CUDA Optimization Suck Less   rightnowai.co/... · Posted by u/jaberjaber23
techbro92 · 4 months ago
Cuda optimization actually doesn’t suck that much. I think NSight studio is amazing and super helpful for profiling and identifying bottlenecks in kernels
techbro92 commented on Electromagnetic coil gun seized in Japan   www3.nhk.or.jp/news/html/... · Posted by u/lando2319
ZFleck · 10 months ago
Is there a reason firearm manufacturer's aren't pursuing the creation / sale of 'coil guns' as actual products? I get that you're introducing reliance on a battery, but you're also gaining (I assume) near silent operation. And most incidents involving a firearm don't extend past one or two magazines anyways.

Seems to me like a cleaner, more "futuristic" weapon. The "hobby" version of this weapon photographed in the article already looks quite clean.

techbro92 · 10 months ago
They’re very underpowered compared to an actual gun.
techbro92 commented on State-space models can learn in-context by gradient descent   arxiv.org/abs/2410.11687... · Posted by u/dsalaj
quantadev · 10 months ago
> can reproduce the outputs of an implicit linear model with least squares loss after one step of gradient descent.

Makes you wonder if we're training LLMs the hard way. For example, if computers had been invented before Calculus, we'd have been using "Numerical Integration" (iterating the differential squares to sum up areas, etc) and "Numerical Differentiation" (ditto for calculating slopes).

So I wonder if we're simply in a pre-Calculus-like phase of NN/Perceptrons, where we haven't yet realized there's a mathematical way to "solve" a bunch of equations simultaneously and arrive at the best (or some local minima) model weights for a given NN architecture and set of training data.

From a theoretical standpoint it IS a black box problem like this where the set of training data goes in, and an array of model weights comes out. If I were to guess I'd bet there'll be some kind of "random seed" we can add as input, and for each seed we'll get a different (local minima/maxima for model weights).

But I'm not a mathematician and there may be some sort of PROOF that what I just said can definitely never be done?

techbro92 · 10 months ago
There are actually neural networks with explicit optimization layers but I don’t think these have really had much success.
techbro92 commented on Why the international experimental nuclear fusion reactor is in 'big trouble'   theguardian.com/technolog... · Posted by u/sandebert
audunw · a year ago
> Unlimited clean energy.

Far from unlimited. Almost all fusion power plant concepts are thermal power plants. These directly contribute to global warming, and you can’t scale up by more than a couple of orders of magnitude without causing significant climate change.

In the end you’d need to use panels to radiate the waste heat directly to space, but then you have similar land use limitations as solar panels.

There’s no reason to think we actually need that energy. Advanced deep geothermal is probably much easier than fusion. With that you’ve got geothermal near the poles, solar everywhere else and wind/hydro/wave/tide to supplement based on needs and availability.

Helion fusion power plant concept is not thermal. So we can probably make a lot more electricity without heating up the planet too much. In the end it too will be limited by the heat added to the planet.

techbro92 · a year ago
All energy we use eventually turns into heat so it doesn’t matter that helion skips a step and converts fusion directly into electricity
techbro92 commented on America's 60-Year-Olds Are Staring at Financial Peril   msn.com/en-us/money/retir... · Posted by u/paulpauper
koolba · a year ago
> I kind of think we have proven that most people are not, and cannot be, capably responsible for their own retirement.

This is one of the reasons I suggest people buy a house rather than renting. The financials may not always make sense, but it forces savings in a way that many people would not otherwise do.

How many people do you think would manually pay a large chunk of their paycheck into a savings account every months before deciding whether they can afford an extra order of curly fries?

Rent eats first and having a mortgage lets you actually save some of that (once you get past the substantial interest heavy starting year).

> The 401k was an experiment, and that experiment has largely failed.

Retirement accounts are not the problem. It’s a general lack of financial education. People can barely calculate simple interest. Compound interest is even less natural. Calculating the present value of a fixed payment annuity in 25 years? We’re a slim minority that can do that from scratch.

Some of the best savers are the ones that do not even understand the financial constructs, but take the savings rates and methods as gospel. Faithfully putting away percentages of their salaries that are orders of magnitude higher than the rest.

> The answer is probably a more generous and better funded Social Security, except that fund keeps getting raided for other purposes.

Social security is claimed to be “money you paid into”. But that cannot be true if the net amount grossly exceeds what you paid in. That system simply would not work without another revenue source.

People have to pay massively more into it over their entire working lives.

And if someone wants a pension the financial product exists. Except nobody wants to actually pay for it because an inflation adjusted guaranteed annuity for life is incredibly expensive! So the present value of it divided out would be more than people are willing to actually pay.

techbro92 · a year ago
A lot of people struggle with regular literacy despite being educated on it for their entire life. I don’t think more education will help these people.
techbro92 commented on Reasoning in Large Language Models: A Geometric Perspective   arxiv.org/abs/2407.02678... · Posted by u/belter
cornholio · a year ago
I think the connection is that the authors could convincingly write a paper on this connection, thus inflating the AI publication bubble, furthering their academic acumen and improving their chances of getting research grants or selective jobs in the field. Some other interests of the authors seem to be detecting exoplanets using AI and detecting birds through audio analysis.

Since nobody can really say what a good AI department does, companies seem to be driven by credentiallism, load up on machine learning PhDs and masters so they can show their board and investors that they are ready for the AI revolution. This creates economic pressure to write such papers, the vast majority of which will amount to nothing.

techbro92 · a year ago
I think a lot of the time you would be correct. But this is published to arxiv so it’s not peer reviewed and doesn’t boost the authors credentials. It could be designed to attract attention to the company they work at. Or it could just be a cool idea the author wanted to share.
techbro92 commented on Pulsar – A Community-Led Hyper-Hackable Text Editor   pulsar-edit.dev/... · Posted by u/dotcoma
technojamin · a year ago
I've got to give Atom a lot of credit for laying the groundwork for VS Code, but I can't imagine ever going back to use it. I doubt this project will ever get the performance to an acceptable level, since it seems like that was never an architectural goal for Atom. VS Code proved that it was absolutely possible to have a performant editor written with web technologies, you just need to prioritize it from the start. That's true for any application, of course, but not something web developers are accustomed to (especially not a decade ago).

It made me a bit nostalgic trying it out again, though. I used Atom for about a year before switching to VS Code, and I remember the vibrant community around it. It definitely fulfilled it's goal of being hackable, since there were extensions that completely extended the UI in some pretty neat/silly ways.

techbro92 · a year ago
I definitely wouldn’t call vscode performant. The UI elements have noticeable latency and most things feel slow. Startup takes multiple seconds.
techbro92 commented on Pulsar – A Community-Led Hyper-Hackable Text Editor   pulsar-edit.dev/... · Posted by u/dotcoma
techbro92 · a year ago
I don’t understand the design constraints and goals that would lead to someone choosing this design. It seems like an insane amount of complexity. I also don’t know much about web development. Wouldn’t it be much simpler to just build a C++ application? I think one possible reason for choosing a web based design is because web frameworks can look really good. But I think this is not an important thing to optimize for in an editor, especially if it’s coming at the expense of performance.

u/techbro92

KarmaCake day104July 25, 2022View Original