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jessetemp

275 karma · joined March 9, 2022

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jessetemp··on Show HN: Hacker News, without AI
There is also the hide button under every post, which I’ve started using generously. It only takes a few seconds to clean up the front page to your taste
jessetemp··on iPhone Duo
I would like to buy just the back half please. I’m not even joking. I couldn’t find the exact dimensions but at 5.4” diagonal, that would make it even easier to use one handed than the mini
jessetemp··on Why humanoid robots won't catch up to human workers any time soon
You're saying the vacuum in the economy (people without an income source) will be filled by something else that leaves people without an income source? Who's paying for the robots? If people find themselves with more time than money, they're not going to buy robots to free up more time
jessetemp··on As AI eats the web, the internet’s collective memory is disappearing
All of that already existed for the purpose of biasing people and now it biases ai for free. A company would have to make an effort to remove or change the bias
jessetemp··on Claude Science
How do you validate this kind of work to weed out any confabulating by the LLMs?
jessetemp··on Ear Training Practice
I kind of agree with you. I think music theory would be way more approachable if it was taught using intervals instead of all the weird naming of western notation. For example, everyone learns major and minor scales which are the interval sequences (in half steps) 2212221 and 2122122 respectively, but the names major minor don't really help you know other scales (excluding modes, maybe). If someone asks you to play hungarian minor, you'd first have to learn and memorize it. But instead, if you understand intervals and are asked to play 2131131, you immediately know how to play it. For me it also encourages experimentation, because there are obviously way more possible interval sequences to explore right?

The problem as others have pointed out is that most musicians in the west already know some degree of western notation, so if you're collaborating, you'll have to translate back to western notation at some point. Even if you invent the perfect notation, it's like asking everyone to switch to esperanto because english grammar is flawed. And you'll still get people defending english "well actually, it's like that because the greeks blah blah blah".

My favorite music notation flaw is C flat. It's a hack. It's an ugly fucking hack and anyone who defends it is defending an ugly hack. The only reason it and double flats exist is because there are some key signatures (this happens with hungarian minor sometimes) where you end up needing to define 3 notes in the span of one space and one line on the staff, and you can't, so you have to borrow from an adjacent space or line. And so sometimes that C is actually a B. It's super annoying but uncommon enough that it's not worth everyone learning a new notation.

Anyway, don't let the nay sayers stop you from learning music however makes the most sense to you. Have fun

jessetemp··on Should you normalize RGB values by 255 or 256?
I get it now. Had to play around with the code a bit to see it. Very interesting and unintuitive problem. Thanks for the thorough replies
jessetemp··on Meta workers can opt out of being tracked at work up to 30 min
You might be right. It’s been a while since I read snow crash. I just remember the metaverse as a sort sad state of society, but I don’t remember if the evil corp stuff was in there or just in the world at large
jessetemp··on Meta workers can opt out of being tracked at work up to 30 min
I had no idea it was a lord of the rings reference. Here’s an apt quote from wikipedia: “The [palantir] stones were an unreliable guide to action, since what was not shown could be more important than what was selectively presented.”
jessetemp··on Meta workers can opt out of being tracked at work up to 30 min
Makes me wonder what it’s like to identify with the villains in media. Zuck looking at the metaverse and thinking hey that’s a good idea! Or Thanos wasn’t so bad. Those rebel scum had it coming. Homelander is the good guy!
jessetemp··on Stop Ruining It
That would actually be a great feature. Opening two file browsers to move stuff around is a really common workflow. Although with current trends we might instead get a chat bot prompt “tell me how you feel about where you want your files to be”
jessetemp··on Should you normalize RGB values by 255 or 256?
Not quite. I'm saying there are 256 discrete numbers (0-255) and 255 intervals between those numbers. Most of the real values will fall into the intervals and get mapped to 0-255 somehow, maybe by nearest neighbor, but I'm not trying to define how they get mapped. The point is that 255 is the largest number that can be represented with 8 bits, so you should normalize by 255.

I wrote a longer replay to alterom but it looks buried for some reason.

https://news.ycombinator.com/item?id=48365800

jessetemp··on Should you normalize RGB values by 255 or 256?
Judging by your other comment in this thread, you might agree with my rational [1] more than you realize

[1] https://news.ycombinator.com/item?id=48365800

jessetemp··on Should you normalize RGB values by 255 or 256?
Thank you for the thoughtful reply. Maybe bins is the wrong word to use, so I'll try with intervals. Starting with 1 bit data, there are two numbers and one interval. I think where bins makes it confusing is that inside the interval there are two big rounding errors mapping everything to either 0 or 1 and many people seem to be considering those the bins.

Taking a step back, remember we're ultimately mapping these discrete numbers to some real world continuous variable like the saturation of red, frequency, mass on a scale, whatever. And our digital device can only represent a finite amount of numbers. For 2 bit data, we can represent 0-3, and for 3 bit data we can represent 0-7.

The important part is that 0 represents the minimum and 1,3, and 7 all represent the same maximum real value, and everything that can be measured by the device will fall within those ranges. So comparing 1, 2 and 3 bit data on a linear number line looks like this:

  0                    1
  0      1      2      3
  0  1  2  3  4  5  6  7
You could assume that everything gets assigned to whatever number is nearest in the number scale or come up with another scheme, but that is ultimately defined by the ADC and likely nonlinear. All we know is that those are the numbers we have available to represent the real values we're measuring.

The question is about how to normalize the data. 1 bit data is already normalized. If you normalize 2 bit data by 3 you get [0, 1/3, 2/3, 1]. LGTM. If you normalize it by 4, you get [0, 1/4, 2/4, 3/4] and you're effectively throwing away some of the range of the ADC. You can try to get it back by offsetting by 0.5 then normalizing but now you get [1/8, 3/8, 5/8, 7/8]. And you could stretch that with some clever formula to fill from 0 to 1, but if you do it right then it's the equivalent to normalizing by 3, so why not normalize by 3?

So the answer is, if you have N bit data, you normalize by 2^N-1.

jessetemp··on Should you normalize RGB values by 255 or 256?
By counting the edges
jessetemp··on Should you normalize RGB values by 255 or 256?
The author is confusing bins with bin edges. In their first plot, the standard approach looks strange because 0-7 should be the bin edges, not the center points as shown in the plot.

You can see this confusion again in the histogram example. There are only 255 bins, not 256. If you fix that mistake and remove the 0.5 offset, then the histogram is distributed correctly at both ends.

jessetemp··on Can we have the day off?
Creating a throwaway for this comment is telling
jessetemp··on Mycorrhizal Fungi, Nature's Key to Plant Survival and Success
Jeff Lowenfels has a series of books about fungi, microbes, bacteria, and nutrients that I really enjoyed. They’re all fairly short and accessible for someone without a bio background.

https://www.jefflowenfels.com/

jessetemp··on Windows 9x Subsystem for Linux
It’s a craft like anything else. Some people enjoy building a table and feel a sense of accomplishment telling their friends “I built this.” Other people just want a table and buy one from Ikea
jessetemp··on Scores decline again for 13-year-old students in reading and mathematics
That explosion plot is pretty bad. No y axis. Unclear if it includes tuition and loans (which are paid or owed by students). Loans are ~50% of "ED appropriations", and only ~$21 million was distributed to students in 2021. But in the plot is looks like spending was around 150 billion (hard to say with no y axis) but ~50% was loans? And the source is just a vague Dept of Ed, with a link at the very bottom of the page to every single table published by the Dept of Ed, so have fun checking the source.

I'm not criticizing your take, although I suspect teachers might lose more than their lunch, just pointing out how terrible the plot is.

jessetemp··on AI-assisted cognition endangers human development?
> do you think that there are limits to who can or should use ai?

I don't think there should be imposed limits, but there might be an upper bound where expertise becomes atrophied by depending on AI too much.

> if the plumber's use of ChatGPT improved outcomes, isn't that preferable?

In the short term sure, and maybe even in the long term for the customer. I think the risk to the plumber is losing some of their expertise by outsourcing to AI. But who knows, maybe the plumber has excellent memory and only accumulates knowledge each time they use AI.

Some of the article is lost in the plumber example. I doubt plumbers are spending much time exploring new ways of solving problems, and might even benefit from having a narrower range of outcomes. Other fields that require both expertise and novel solutions will be at a disadvantage if they become more homogenized by depending on AI. Not only is the range of solutions reduced, but getting there is faster, so people end up in a local maxima. Maybe they get stuck there, maybe not, but that's the risk I see.

You don't imagine any long term risks by outsourcing expertise to AI?

jessetemp··on AI-assisted cognition endangers human development?
The plumber obviously. Not everyone needs to know how to be a plumber, but a plumber should know how to be a plumber
jessetemp··on Long overlooked as crucial to life, fungi start to get their due
Higher cost doesn't always indicate negative environmental consequences. It could be (and seems likely to me) that harvesting one cow's worth of plant protein is more labor intensive which isn't necessarily bad for the environment. If you compare two soy crops, one that uses herbicides and another that uses manual labor to pull weeds, the latter will be more expensive and better for the environment
jessetemp··on Long overlooked as crucial to life, fungi start to get their due
It doesn't need to be cheaper than the cheapest meat to be competitive. If there's some social or moral incentive to avoid real meat, that adds value to plant based alternatives.

Fungi protein sounds cool though. I would totally add that to my diet. But I also think insects are an underutilized protein source, so I might be an outlier

jessetemp··on Training a trillion parameter model to be funny
Laughter isn’t a perfect signal, but is the only signal in all the noise you mentioned
jessetemp··on Training a trillion parameter model to be funny
> If two people disagree on whether something is funny, who's wrong? You can't say either of them is. There's no reward function for funny.

Laughter is the reward. N of 2 is a small sample size, but if one person laughed you could say it was 50% funny.

> a really good joke is recent, relevant, and shows deep understanding of its subject

These can help, but it ultimately doesn't matter how recent, relevant, or deep a joke is. If no one laughs, it wasn't funny.

jessetemp··on Google removes AI health summaries
Ideally, hold Google liable until their AI doesn’t confabulate medical advice.

Realistically, sign a EULA waiving your rights because their AI confabulates medical advice

jessetemp··on Complex life on planets orbiting the galaxy's most common stars may be unlikely
Only true if the alien plants are using the same chlorophyll as earth plants, which seems like a colossal fucking assumption to me
jessetemp··on A quarter of US-trained scientists eventually leave
Sorry to ruin your ruining, but if you read past the abstract and look at the data, you'll see it tends to correlate with whether a democrat or republican is in office. Immigration policy is also mentioned in the discussion.

> Given these findings, a corollary question is what attracts foreign graduate students to the US and leads them to stay. Prior research points to immigration policy—a subject of perennial public interest—having a large effect on stay rates

jessetemp··on We gave 5 LLMs $100K to trade stocks for 8 months
> fewer safety guardrails in pretraining and system prompt modification that distort reality.

Really? Isn't Grok's whole schtick that it's Elon's personal altipedia?

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