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femto

7,491 karma · joined August 4, 2011

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femto··on When oil prices spike, where does the money go?
About 0.1% (Woodside)

https://www.unisuper.com.au/investments/our-investment-optio...

It's diversified, but the biggest holdings tend to be in Australian Banks, BHP and the "big" US tech stocks.

femto··on Ask HN: What are you reading?
Deep Learning With Python, Third Edition by Francois Chollet and Matthew Watson

Recently read books by Anthony Doerr (Shell Collector, About Grace, Memory Wall, All the Light We Cannot See) and Simon Singh (Code Book, Fermat's Last Theorem, Trick or Treatment, The Simpsons and Their Mathematical Secrets).

femto··on Owed a billion dollars in Nvidia stock
> These things can get messy fast.

Yep. I was on a fixed term contract, which had expired, even though I was still working on the project well after its expiration. It would have been interesting to argue that any IP assignment expired with the contract. As you said: messy. As I judged: not worth it.

femto··on Owed a billion dollars in Nvidia stock
I was in on the ground floor of WiFi, in that around 1995 I did a significant chuck of the work that proved that WiFi works, and my work at a university lead to the formation of a company that put WiFi into the market (Radiata). The IP situation was murky. A patent holder made about $1b and the company sold for $560m (in 2000). I gather the university complained and got a good chunk of "go away" money. I could have thrown my hat in the ring: maybe I would have got something, maybe I wouldn't have. Either way, I walked away, as I judged it wasn't worth the non-financial cost. 30 years layer I still think I made the right decision. I might have been living in a nicer house, but I wouldn't have the life I have today, which I am happy with.

I don't know your situation in life, but if your experience is anything like mine I reckon you've probably made the right decision.

femto··on We're gonna need a lot more mathematicians
Published in 1909:

https://www.gutenberg.org/cache/epub/72890/pg72890-images.ht...

https://en.wikipedia.org/wiki/The_Machine_Stops

femto··on EU chief opens door for Canada to become 'associate member'
> ...wait for Australia to join first.

A possibility.

https://www.reuters.com/business/australia-on-same-page-cana...

femto··on The biggest dinosaurs couldn't sit on their eggs
Same technique as Australia's bush turkey.

https://en.wikipedia.org/wiki/Megapode#/media/File:Brushturk...

A more direct link than a crocodile, as birds came from dinosaurs.

femto··on Largest known Roman mosaic, beneath Baths of Trajan, opens to the public
Pictures in this article:

https://www.thehistoryblog.com/archives/76901

femto··on Ask HN: What are you working on? (September 2026)
I'm designing and building a rack to house 5 ukuleles and a guitar.
femto··on Data collected by cars and sold to third parties
Best to use a termination, to avoid the power that would have gone into the antenna from reflecting back into the transmitter output and damaging the output driver transistors. Damage is no bad thing if you do want to permanently disable the transmitter, but not so good if you want it to be reversible. Chances of damage due to reflections is probably low given the relatively low power being transmitted, but best not to take the risk if it can easily be avoided with a termination.
femto··on Starlink Signal Leakage Threatens Radio Astronomy's Most Critical Frequencies
There's probably a reason for that.

> Current ITU regulations ignore unintended satellite hardware leakage, leaving astronomers without legal protection.

Oh, what a coincidence.

femto··on Rivian's gambit for full autonomy
It should be 100% liability on the self-driving car. Only by doing that will there be enough incentive for the manufacturers to drive the accident rate down to zero (or in practice a low enough number that the cost to manufacturer of the remaining accidents is negligible). Less than 100% liability provides wiggle room, which car manufacturers will exploit to maximise profits over lives. With 100% liability manufacturers can still make a pile of money, but only if they have a low accident rate.
femto··on Why do I lose my passion and want to do nothing?
Because you perceive a readily available result to be worth less? Why do something whose value has gone down?
femto··on Europe's summer drought is so extreme that desertification is a growing threat
It's "their" fault, at least according to Andrew "Twiggy" Forrest, who is one of "them". His view is that if a specific group, of about 1000 powerful people, chose to address climate change, it would be fixed.

https://www.smh.com.au/environment/climate-change/inside-and...

femto··on State of the Map 2026
It's geofenced.

https://blog.google/products-and-platforms/products/maps/uni...

femto··on I were 17, I'd learn how to build LLMs from scratch
In that regard, it's not too different from mobile telephony. Mobile phones drove the electronics industry 20 years ago, but there is limited demand for people who really know how to build a phone (ie. build the hardware and write all the signal processing from scratch), as there aren't that many companies that do phones at the lowest level. A few of the engineers got rich (eg. Viterbi), but most 'just' made a good living. Most people who got rich off phones didn't do it by knowing how phones work.

Incidentally, the skills for the lowest levels of LLMs aren't that far removed from those needed for mobile telephony, in that both are based on maths, computation and information theory.

femto··on Copyright does not protect AI-generated content in EU
1) Does applying a copyright message warrant that the content has not been generated by an AI?

2) If one applies a copyright message to AI generated output, is that fraudulent?

femto··on And then the men with guns tell you to do it anyway
That's a complete misreading. Eye for an eye is

"treat others as they treat you"

Golden rule is'

"treat others as you WANT them to treat you".

It's the complete opposite of eye for an eye. If someone is being badly treated by others, most would want to be well treated instead, so the Golden Rule would say that you treat others well, even if others are treating you badly.

femto··on And then the men with guns tell you to do it anyway
The closest we have to a "neutral rule" is "The Golden Rule":

"Treat others as you would like them to treat you."

It has a long history, both secular and religious. Pretty well everything flows from it, and if someone is doing "the wrong thing" whilst claiming to obey it then they are probably deluding themself.

The rule is suited to enforcement, since if someone does something "wrong", rather than immediately attacking them you can reasonably ask "Would you like it if I did this to you?". Limitation of power is built in.

https://en.wikipedia.org/wiki/Golden_Rule

femto··on Making holograms with a pen plotter
The disk is part of a larger Scanning Tunneling Microscope project.

https://john-alexander42.github.io/simple-stm-web-page/Proje...

Alexander's results show a movement range of 1.25um, 10 times smaller than the 12.5um step of your system, so in its current form it wouldn't be suitable for interpolating motor steps.

Also potentially interesting is Alexander's "cut-and-pull" technique for making scanning tips with a single atom at the point. I can't find the original reference, but here's a description:

https://www.nanophys.kth.se/nanolab/afm/icon/bruker-help/Con...

The single atom would likely immediately wear down if used for scribing, but even if it wore down to multiple atoms wide it might still produce a very narrow line? I wonder what the effects of using an STM on a photosensitive plate would be, whether the strong electric field at the tip would lead to very narrow photographic lines?

femto··on Making holograms with a pen plotter
It would be interesting to augment the plotter with a Unimorph piezoelectric disk scanner [1], to enable finer movement so lines can be drawn closer together.

[1] https://john-alexander42.github.io/simple-stm-web-page/Disk_...

femto··on Publishing Schematics Before “Open Source” Was a Word
Most electrical/electronic items (radios, TVs, washing machines, ...) used to come with a schematic, or at least a block diagram, inside the device. Similarly, published integrated circuit data sheets contained enough information to understand how the chip worked to a low-level. This changed around the 80s from memory? There wasn't a word for "open source" in electronics, as it was just the unnamed default. It was all paper based, as it predated wide-spread online distribution.
femto··on A 'bananas' order for 5000 obscure book titles fuels suspicion
Perhaps Anna's Archive will be the last bastion of some books, especially if they manage to acquire the internal collections of some of the AI companies, à la Spotify. (ie. the parts of the collections that didn't come from Anna in the first place.)
femto··on A 'bananas' order for 5000 obscure book titles fuels suspicion
As long as the AI devouring a book isn't making it harder for a person to get access to a copy of the book. There might not be many copies of some out-of-print books.
femto··on São Paulo resident transforms degraded area into urban forest
The battle for Wendy's garden will pale into insignificance compared to the battle for a "Sydney Harbour High Line".

https://www.sydneyharbourhighline.org.au/

In 2023 the NSW government committed to turn the adjacent harbourfront railway line into a public linear park. The next government shredded the agreement and has announced it wants housing everywhere. IMO it's prime land that is too valuable to be privately owned and should be publicly accessible. Anyone who disagrees should go for a harbourfront walk on a sunny afternoon. (Billionaires who's takeaway from the experience would be to buy the land for their own use don't count.)

The same battle played out in Cremorne in the 1890's. Today the park is one of Sydney's jewels.

https://www.bonditomanly.com/bondi-to-manly-walk-blog/2020/1...

femto··on Hackers Stalked Me by Hijacking a Smartwatch for Kids
> made by an equally obscure manufacturer, YiQingTeng Electronics, in Shenzhen, China.

Is this what is meant by "Shenzhen Speed"? Dump all safeguards and get any piece of crap out the door as soon as possible? This comment isn't directed specifically at Shenzhen, as other parts of the world do the same thing and call it "Move fast and break things."

Dropping engineering standards may increase short term profits, but it erodes people's trust in the world around them when everything "sort of works".

There's an argument that this low level continuous corrosion does more long-term damage than obvious safety flaws that are serious enough to prompt corrective action.

femto··on São Paulo resident transforms degraded area into urban forest
A similar story to Wendy's Secret Garden in Sydney, Australia?

https://www.wendyssecretgarden.org.au/

After her husband's death in 1992, Wendy Whiteley took to cleaning up an unused railway easement behind her house. It turned into a substantial garden. The railways refused to guarantee its future (it was on their land), but in 2015 it became an official park. Well worth a visit on a sunny afternoon if you are in Sydney.

femto··on Show HN: SIMD Viterbi Decoder in Rust
Nice! Thanks too for putting the work into this library.
femto··on Show HN: SIMD Viterbi Decoder in Rust
I got caught out by my Australianism!

"How do you find the speed of the Rust version of your FEC vs, the C version?"

translates from "Australian" to "English" as:

"What is the speed of the Rust version of your FEC vs, the C version?

Though it was interesting to know how you do it. I'm interested in the speed, as I once looked into using Rust for a signal processing project, but ultimately went with C++ because the team wasn't familiar with Rust. At the time, it seemed to me that Rust had the potential to go faster.

femto··on Show HN: SIMD Viterbi Decoder in Rust
How do you find the speed of the Rust version of your FEC vs, the C version?
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