HNHacker News
TopNewBestAskShowJobs

jyounker

1,345 karma · joined September 7, 2015

submissionscomments
jyounker··on Should you normalize RGB values by 255 or 256?
From an algebraic standpoint, the answer is clearly f(x) -> [0, 255].

If you don't have f(n * 0) == n * f(0), then all sorts of weird stuff happens. Compare these two:

  For f(x) -> [0, 255] then f(0) + f(0) + f(0) = 3 * 0 = 0

  For f(x) -> [0.5/8,7.5/8] then f(0) + f(0) + f(0) = 3 * 0.5/8 = 1.5/8
Choosing f(x) -> [0, 255] means that if you do a calculation on the x side and you do the same calculation on the f(x) side, then you'll get the same result when you convert from one to the other.

Choosing f(x) -> [0.5/8,7.5/8] breaks the algebraic correspondence.

jyounker··on Should you normalize RGB values by 255 or 256?
From an algebraic standpoint, the answer is clearly f(x) -> [0, 255].

If you don't have f(n * 0) == n * f(0), then all sorts of weird stuff happens, like:

For f(x) -> [0, 255] then f(0) + f(0) + f(0) = 0 + 0 + 0 = 0 = f(0)

For f(x) -> [0.5/8,7.5/8] then f(0) + f(0) + f(0) = 0.5/8 + 0.5/8 + 0.5/8 = 1.5/8 != f(0)

Choosing the latter means that if you do a calculation on the x side, then you can't expect it to match the calculation on the f(x) side.

jyounker··on That Methyl Methacrylate Tank
The answer is actually really easy, and it's been implemented successfully before: selective import taxes.

You set import taxes so that they offset price advantages. If a country has shitty environmental laws, crappy labor protections, etc. then you prices that into their import taxes. That way they don't gain any advantages in a race to the bottom based on things that you care about in your own country.

If a country adopts better environment laws, labor projections, etc. then you lower the import tariffs you charge on that country's relevant goods

jyounker··on A sleep-like consolidation mechanism for LLMs
> Being asleep may trigger the things we need to get done, but that doesn't mean sleep is fundamentally necessary for the things we need to get done. It could be just that it happens to be the way our biochemistry is wired, and we may find some other way to trigger those things.

We now have evidence for REM sleep in spiders(1). Our last common ancestor with spiders predates the development of nervous systems. This strongly suggests that sleep (and specifically REM sleep) serves some function important enough that it has independently evolved in both protostomes and dueterostomes. (And probably multiple times within the protostomes, being present in both cephalopods and jumping spiders.)

There may be some commonality in the origin of the ion channels, but I'll lay money that the requirements for sleep are more of a result of general information processing requirements.

(1)https://www.pnas.org/doi/10.1073/pnas.2204754119

jyounker··on Outsourcing plus local AI will soon become more economical vs. frontier labs
The problem with outsourcing, as opposed to remote developers, is that it takes a really good manager and tech lead to make it work.

My experience is that you have to write extremely detailed design documents and work specifications in order to get effective results. These generally have to be as detailed as most effective prompts.

Once you've written specs that detailed, why do you need outsourced developers and frontier models?

jyounker··on Outsourcing plus local AI will soon become more economical vs. frontier labs
Prompting is just writing specification documents. A lot of people are very bad at this. I suppose that more to the point, a lot of people are just bad at writing.
jyounker··on Outsourcing plus local AI will soon become more economical vs. frontier labs
Weights are write-once data.
jyounker··on Toxic chemical leak at a manufacturing facility in Orange County
Imagine how often this situation lie this would be happening without institutions like OSHA or the EPA.

Stuff like this happens in Texas on a fairly regular basis, but it rarely ever makes national news.

jyounker··on Texas woman arrested for Facebook post about town water quality
The poster was pointing out the irony that the town's residents support pro-water pollution policies at the national level.

[Given that Henderson county went for Trump by 30 points, the probably also support pro-pollution policies at both the local and state level too.]

jyounker··on Texas woman arrested for Facebook post about town water quality
Well said.
jyounker··on Texas woman arrested for Facebook post about town water quality
Since at least the 70s everyone knew that it caused lung cancer. It's just that industry spending prevented anyone from doing something about it, in the exactly the same way that we've been seeing with global warming.
jyounker··on I don't think AI will make your processes go faster
By "non-workable" I think people mean that it won't compile Hello World.
jyounker··on Ted Turner has died
I think you have a misperception of the past. The actors that played the great chinese detective Charlie Chan were Warner Oland, Sidney Toler, and Roland Winters.
jyounker··on How an oil refinery works
It's not like there is one chemical plant. The plants start on the east side of town, and they pretty much go all the way to Beaumont. The night-time view Eastward from the top of the ship channel bridge is best described as "Hell at Christmas time". Lights and flares stretching to the horizon.

There are a few times I've been in Pasadena (the town East of Houston), and I've just started retching from the smell. I don't understand how anyone can live there (and my father did for many years.)

jyounker··on How an oil refinery works
I didn't really see anything smarmy about it. It seems to me that the reply was way off kilter.
jyounker··on How an oil refinery works
The prize is a great book, you just have to keep the author's point of view in mind. (He's got a few blind spots with respect to the downsides of oil.)

The book does an amazing job of explaining the strategic structure of WWII in a simple and clear and way.

If you want to understand modern history, you can't skip it. It's also a just a riveting read full of wild characters.

jyounker··on How an oil refinery works
> Gotta love that ivory tower smarmy attitude.

When did, "I don't want people poisoning my water," become ivory tower smarmy attitude?

jyounker··on How an oil refinery works
Wow. I grew up in Houston, and I assumed that the smell from these plants was pretty-much unavoidable. It's shocking (and I guess not all that surprising) that this is a choice that manufacturers make.

I guess it really does depend on the economic power of the surrounding communities.

jyounker··on Germany has become the largest ammunition producer in the world
I live in Germany. My roommate is Polish. I have friends who are Polish. Poles are infinitely more afraid of the Russians.
jyounker··on Germany has become the largest ammunition producer in the world
Modern artillery doesn't sit in fixed emplacements. It fires a few shells, and then moves. For example: https://en.wikipedia.org/wiki/Archer_artillery_system
jyounker··on Germany has become the largest ammunition producer in the world
Because Russia is waging open war with one of Germany's allies, and has been preparing for war against the Baltic states.

It's not like Germany is far away either. The Western edge of Ukraine is, in some places, closer to Berlin than the Western edge of Germany.

jyounker··on The Abstraction Fallacy: Why AI can simulate but not instantiate consciousness
Yawn. We have no understanding of what consciousness actually is. Therefore attempting to prove whether a system can or cannot be conscious is something we can't prove or disprove at this point.
jyounker··on The insider trading suspicions looming over Trump's presidency
I suggest that you actually look up the numbers for other presidents: https://www.presidency.ucsb.edu/statistics/data/executive-or...
jyounker··on Beware, fellow plutocrats, the pitchforks are coming [video]
Forgot to add the link: https://www.youtube.com/watch?v=q2gO4DKVpa8
jyounker··on Beware, fellow plutocrats, the pitchforks are coming [video]
Nick Hanauer is a self-described plutocrat. Here's his take on where income inequality is headed.
jyounker··on Molotov cocktail is hurled at home of Sam Altman
Closing your eyes doesn't make the danger go away.
jyounker··on Molotov cocktail is hurled at home of Sam Altman
A lot of people in the US feel like they've already tried the nice way, and it's failed. Given the increasing wealth disparity between the haves and the have-nots, it's hard to argue otherwise.
jyounker··on Molotov cocktail is hurled at home of Sam Altman
It's due to the widening inequality. Nick Hanauer has been talking about this for over ten years: https://www.youtube.com/watch?v=q2gO4DKVpa8
jyounker··on South Korea Mandates Solar Panels for Public Parking Lots
If there are solar panels over the parking lot, then the parking lot doesn't have to be plowed. You can design the panels at appropriate slopes to direct the snow off the lot.
jyounker··on Make macOS consistently bad unironically
On the desktop, yes, niche. [There are things like Android with a Linux kernel that I wouldn't call Linux in the sense of a full OS.]
← PreviousPage 4 of 20Next →