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natmaka

1,482 karma · joined June 18, 2007

Interests: Startups, Open Source, Mentorship, Martial Arts, Entrepreneurship, Technology

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natmaka··on Oniux: Kernel-level Tor isolation for any Linux app
Thank you, therefore my first impression seems right: without any provision for UDP this isn't an easy-to-setup and transparent way for any user to preserve his/her privacy.
natmaka··on Oniux: Kernel-level Tor isolation for any Linux app
Isn't all this reserved to TCP, in other words in which way may it protect non-TCP activity?
natmaka··on Notes on Tunisia
> "pacify" a place and to take control of it has little to do with a full annexation

Indeed. No objective is intangible. Actions taken to reduce an aggressive enemy to inaction can lead to a promising discovery (in this case, that of what would become Algeria, which was then a rich agricultural and pleasant territory occupied by non-unified tribes) leading to a desire to seize it.

natmaka··on Notes on Tunisia
> The French invasion of Algeria has always seemed unique and odd to me

It began with centuries of piracy and enslavement in the Mediterranean sea, leading to the https://en.wikipedia.org/wiki/Barbary_Wars , which in turn led to the https://en.wikipedia.org/wiki/Bombardment_of_Algiers_(1816) . All this doesn't set a path for the invader to offer equal rights to the "indigenous" population.

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
> plenty of anti-nuclear money floating about years ago

They had much more efficient targets than old waste dumped in the ocean, especially after Tchernobyl and Fukushima!

>> It would have been way more expensive.

> I was coming from the radiation protection perspective

It seems indeed less risky from this perspective, however my point was about the total cost for the nuclear industry: dumping from barges is a breeze, digging the ocean floor is way less easy (and therefore cheap).

Many in the nuclear industry maintain the (quite old and until now vain) hope of obtaining a model of industrial breeder reactor ( https://en.wikipedia.org/wiki/Breeder_reactor ), and therefore are opposed to any waste-disposal option which makes waste-recovery more difficult.

> Industrial accidents do happen

AFAIK in every industrialized nation each and every sector of the industry HAS buy an adequately insurance (civil liability). Nuclear power is the sole exception: it is insured mainly at the taxpayer's expense and the reimbursement limit is ridiculously low. In France a study published by the official nuclear institute (IRSN) showed that a major accident on a single reactor may cost more than 400 billions euros (French ahead: https://www.irsn.fr/savoir-comprendre/crise/cout-economique-... ) , and the limit is about 700 million €. 3 orders of magnitude... The local Cour of Audit periodically yells about this. In the USA the limit is set at 16.1 billion USD ( https://environmentamerica.org/media-center/statement-federa... ).

natmaka··on Another way electric cars clean the air: study says brake dust reduced by 83%
Tall grille, heavy... they are more and more dangerous.

"only a quarter of truck owners use their trucks’ towing capacity more than once a year. Only about 30 percent of truck owners go off-road more than once a year. And 35 percent of truck owners basically never even put anything in their truck beds"

https://slate.com/business/2022/02/suvs-pickups-heavy-huge-d...

natmaka··on Using Postgres pg_test_fsync tool for testing low latency writes
> I tend to set up a small, but completely separate block device (usually on enterprise SAN storage or cloud block store) just for WAL/redo logs

I'm not sure about this, as this separate device may handle more of the total (aggregated) work by being a member of an unique pool (RAID made of all available non-spare devices) used by the PostgreSQL server.

It seems to me that in most cases the most efficient setup, even when trying hard to reduce the maximal latency (and therefore to sacrifice some throughput), is an unique pool AND an adequate I/O scheduling enforcing a "max latency" parameter.

If, during peaks of activity, your WAL-dedicated device isn't permanently at 100% usage while the data pool is, then dedicating it may (overall) bump up the max latency and reduce throughput.

Tweaking some parameters (bgwriter, full_page_writes, wal_compression, wal_writer_delay, max_wal_senders, wal_level, wal_buffers, wal_init_zero...) with respect to the usage profile (max tolerated latency, OLTP, OLAP, proportion of SELECTs and INSERTs/UPDATEs, I/O subsystem characteristics and performance, kernel parameters...) is key.

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
> Would have thought a long-term study of these sites would have already been underway

As far as I know those studies are far from extensive and there is no permanent effort.

> given their apparent potential hazard

The good'ole "who is in charge, who pays?" is at play.

In many nations the nuclear industry just doesn't care (they dumped their waste, and good bye!) or disappeared after a phase-out.

A fair part of those who can pay those studies prefer to pursue their own endeavors (why would they have to work in order to cope with other's boo-boos?), for example the lack of resources available for oceanographers' core missions is well-known.

> Surely Greenpeace

AFAIK obtaining and maintaining a boat isn't easy for them. Doing so for some bathyscaphe (or similar equipment) and all the associated infrastructure and expertise for what nowadays is a mission (showing the bad effects of civilian nuclear) which is vanishing just as its mere subject is, while others (pollution, overfishing...) are more and more difficult, seems 'ambitious' without any very generous dedicated donation (are you interested in giving?).

> does the position not require such evidence

As already stated experts decided nearly 60 years ago to quit dumping waste in the ocean floor (London Convention), this seems sufficient to me.

> disposing of the waste ten+ metres under the sea floor would have been much better.

Maybe, maybe not. It would have been way more expensive.

> work done by Charles D. Hollister

IMHO the nuclear folks liked to be able to dump waste from a barge. Asking them to dig the seabed...

> You mistake my sense of humour;

Indeed, sorry.

> I was referring to the increased radiation dose from flying to/from conferences.

The point is: anyone decides upon hoping in any jetliner, or abstaining from doing so. A nuclear reactor can trigger a major accident which lets no such choice in a huge area, and for quite a while.

If someone lacerates the tattooed arm of someone else and says "hey, you already hurt yourself with this tattoo" I'm ready to bet that most, including any judge, will not support him.

natmaka··on Ask HN: What are you working on? (May 2025)
> not just by keywords, but by intent

A relatively "simple" approach (augmented associative memory) gives very good results, check for example the good old "Remembrance Agent", and it may complement a LLM(?)

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
> Do those old dumps generate high doses?

Nobody knows. A new exploration campaign is running (named 'Nodssum' https://www.myscience.org/news/2025/dechets_radioactifs_une_... ), targeting North-Atlantic zones.

> Is there evidence of the high doses generated, and if so why isn't this on the wikipedia page?

AFAIK it now is forbidden to dump highly dangerous waste in non-negligible amounts in the ocean not because there was some accident, but because experts judged that it may trigger one. An approach is to advocate the "let's do whatever please until something breaks", another one is to think about potential consequences THEN to decide.

> dose from an old dump is higher than that from a fuel fabrication, reprocessing plant or nuclear power station.

Those contexts are way more under human-control than an ocean floor.

> One wonders how they get to conferences.

This is a weird way to describe a real, ancient (and IMHO growing, since Fukushima) controversy.

https://en.wikipedia.org/wiki/Linear_no-threshold_model#Cont...

https://en.wikipedia.org/wiki/Radiation_hormesis#Proposed_me...

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
> this not dust escaping during normal operation

Indeed, however past accidents now forbid to claim that "this dust will never wander around, everything is under control".

> If they were all N4 they would have been kept running and had a rolling program of repairs.

Nope, as the defect was considered (by EDF itself, the company owning and operating it, chief of the nuclear industry in France, and AFAIK experts agreed) as too dangerous for the reactor to continue to operate.

> your desire to have a heterogeneous fleet of reactors

I don't desire any reactor. I'm only pointing out a major dilemma intrinsic to the "nuclear" approach.

> nobody dies due to the lack of electricity

I explained why a mix of renewables cannot lead to such ordeal, which was induced in Japan by the decision to produce electricity thanks to nuclear reactors and the decision to shut them off after the Fukushima accident.

Iberian blackout: nobody knows the cause for sure, experts are analyzing the event.

natmaka··on Tallest Wooden Wind Turbine
Many are now burnt in cement kilns.

A fair part of new blade models are recyclable (check RecyclableBlade, ZEBRA, PECAN...).

Research may even enable to somewhat recycle old ones: https://www.offshorewind.biz/2023/02/08/newly-discovered-che...

natmaka··on Tallest Wooden Wind Turbine
We even know how to feed gas turbine with hydrogen, and how to make hydrogen thanks to renewables' overproduction ("green hydrogen").
natmaka··on Germany drops opposition to nuclear power in rapprochement with France
>> A "large portion" isn't all

> Setting the bar too high.

The major underlying point is a comparison: renewables vs. nuclear. And on those accounts (effect of a major accident, waste...) renewables are clear winners.

>> The LNT debate isn't settled > up-coming ICRP modernisation

Not sure about this. This "modernisation" is, AFAIK, stagnant ( https://en.wikipedia.org/wiki/International_Commission_on_Ra... ). Moreover quite different hypothesis are more and more widespread ( https://en.wikipedia.org/wiki/John_Gofman ).

>> Moreover the dust escaping

> What sort of dust is this?

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

Some escape during a nuclear major accident, and very few want it in the air they breath, the food they eat, the water they drink... Even most of those believing this will cause no harm may prefer clean air, food, water...

>> Fukushima nuclear accident

> In hindsight how many of these people needed to be evacuated?

Nobody knew at the time, and they even considered that evacuating the entire region may be necessary! ( https://en.wikipedia.org/wiki/Naoto_Kan#Fukushima_nuclear_ac... ).

Moreover even obedient Japaneses may, during a major nuclear accident, not be willing to obey to "please stay and wait!", especially from those who previously said "the nuclear plant is safe, there will be no problem.'.

In any case even magnificent armchairs' experts babbling 'they could and should stay and wait" years after the event cannot change History.

> How many people died from overheating due to a lack of electricity in the years after Fukushima?

This perspective also leads to preferring renewables as the will to shut down nuclear reactors during such accident, for the lack of an immediate full explanation, and also the imperative to do so after discovering some generic defect), all play for renewables.

The pressing (financial) necessity of building reactors in series (of units as identical as possible, in order to reduce unit costs) reduces their heterogeneity and thus the robustness of the fleet, to the point of making a "generic defect" one of the industry's fears, as the discovery of a defect can coerce int shutting down all reactors of the model concerned.

This is what happened in France at the end of 2021 with the shutdowns of N4 reactors due to as recently in France after discovering stress corrosion cracking ( https://en.wikipedia.org/wiki/Nuclear_power_in_France#Crisis... ) is specific to nuclear. If all the reactors in the fleet were N4, they would all have been shut down!

During and shortly after the major nuclear accident at Fukushima, all other nuclear reactors in Japan were shut down as a precaution and remained so for years. Most of them are still down in 2025, some claim that they are restarting but, 14 years after the accident, the hard facts are clear: https://ourworldindata.org/grapher/share-electricity-nuclear... , reflecting the lack of enthusiasm of the population.

Let's check the trend. Share of produced electricity in Japan:

2011: 75% fossil fuels, 15% nuclear, 10% renewables

2024: 68% , 8.3% , 23%

https://ourworldindata.org/grapher/elec-mix-bar?time=2011&co...

Wind, solar... sources do not pose such a threat because they cannot trigger a catastrophe, so discovering a problem does not mean shutting down all units of the type in question. The heterogeneity of renewable source types (solar, wind, geothermal, biomass, etc.), that of equipment manufacturers and models (wind turbines, photovoltaic panels, etc.), as well as the unit sizes of the latter, which are smaller than those of a nuclear reactor, and their geographical dispersion, increase the robustness of the renewable energy fleet: the probability that a large part of the fleet will break down, develop a fault, produce nothing, etc., is minimal.

No lack of electricity => nobody dies due to the lack of electricity.

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
> some level of radioactivity being discharged to the sea is deemed acceptable by experts

Doses now tolerated are way below those of ancient dumps. This is a classic ( https://en.wikipedia.org/wiki/The_dose_makes_the_poison )

I wrote "we are far, far away from the massive (hundred of tons) dumps from the previous era" to subsume it.

Moreover the whole Linear No-Threshold and bioaccumulation of radioisotopes debate is far from settled, therefore some experts judge even low doses too dangerous.

> we should be able to vote on it?

IMHO yes. At the very least every citizen paying for it or exposed to some risk has a vote. Direct democracy and referendums let any of them take part, and experts have to convince a majority.

> need for subsidies and/or guaranteed prices

It mainly is an effect of (past and current) massive subsidies granted to other types of energy sources (nuclear, fossil fuels...), the difficult struggle of incoming quickly evolving tech (photovoltaic, wind turbines...) versus amortized plants, and the insufficient amount of energy-storage deployed equipment.

All those burdens are (slowly, this is heavy industry stuff) vanishing and it (more and more quickly) becomes perceptible: https://ourworldindata.org/grapher/electricity-fossil-renewa...

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
> ocean disposal of radioactive material still happens, and experts are OK

As far as I know ''certain Annex I materials dumping may be permissible if present only as "trace contaminants" or "rapidly rendered harmless"'' ( https://en.wikipedia.org/wiki/London_Convention_on_the_Preve... ), that is to say we are far, far away from the massive (hundred of tons) dumps from the previous era ( https://en.wikipedia.org/wiki/Ocean_disposal_of_radioactive_... ).

> take into account the unborn generations?

This is by definition impossible. We may consider opinions of the current generation as reasonable approximations.

> Or the unemployed created by high energy prices?

It could be an argument in presence of a consensus promoting a single way to establish the total cost of a given type of energy source. There isn't, and it doesn't come as a surprise as some unpredictable event (nuclear major accident, nuclear waste wandering in some populated area...) may hugely raise the total cost.

Moreover the total production cost (LCOE) of renewables is already way (and more and more) below nuclear's, and there is no consensual way to assess the cost of firming those sources (cancelling the effects of 'intermittency' on production). Add the general movement towards decentralization...

Nowadays the low-and-ever-lowering-LCOE of renewables more and more threatens the very business model underlying the nuclear industry which finds its foundation in a high load factor.

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
> we don't seek unanimity before proceeding with something.

> this is a settled matter since at least 1972

This is an opinion. My (dissenting) one is that the more someone is or could be impacted, the more we have to take his/her opinion into account.

> Disposal of small amounts of radioactive material at sea and into the air happens

It doesn't imply that it is an adequate way to dispose of it.

> An international convention does not settle the science behind ocean disposal

"The main objective of the London Convention is to prevent indiscriminate disposal at sea of wastes that could be liable for creating hazards to human health; harming living resources and marine life; damaging amenities; or interfering with other legitimate uses of the sea." ( https://en.wikipedia.org/wiki/London_Convention_on_the_Preve... )

> The lack of supporters perhaps reflects the difficulty in carrying out such research, and the problems of trying to change international agreements.

Nuclear-waste long-term repositories projects are very expensive and difficult (to the point of many attempts failing flat) everywhere, therefore attempting to convince that ocean-dumping is OK would be useful.

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
> Disagreement

Indeed, my point was about a form of propaganda quite common in France, which states that long-term waste repositories (now work-in-progress) will be perfectly safe. They won't.

> assess the waste?

Most of renewables' waste is recyclable, and more and more is recycled, even wind turbine blades.

> likely number of people killed over the lifetime of the waste

The more types of waste and the longer the lifetime (nuclear...), the more difficult it is.

> count the waste from manufacturing

As far as I understand yes, an adequate life-cycle assessment ( https://en.wikipedia.org/wiki/Life-cycle_assessment ) has to do so, however this is a good point: it may somewhat be neglected.

natmaka··on AI's energy footprint
Because a mix of renewables deployed on a continent (most grids tend nowadays to extend on whole continents because it enhances continuity of service while offering many ways to optimize for emissions, costs...) is better (cheaper, less dependency towards any fuel, less risk related to accidents/neglects/mistakes/war/terrorism/hot waste/... ...).

GAFAM nuclear are mere announcements, intentions.

On the other front most already progress. https://www.reuters.com/sustainability/climate-energy/micros...

https://www.reuters.com/sustainability/climate-energy/micros...

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
Scoop: it now is not about "nuclear vs. coal" but "nuclear vs. renewables".
natmaka··on Germany drops opposition to nuclear power in rapprochement with France
The bar is the comparison with the other set of pertinent electricity-generating equipments: renewables.

The LNT debate isn't settled, effects of added background radiation is difficult to assess. Moreover the dust escaping from a nuclear plant may be inhaled, ingested... ( https://en.wikipedia.org/wiki/Committed_dose ).

A "large portion" isn't all, and at Fukushima the nuclear accident-triggered evacuation officially made around 2200 victims.

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
> File earthers

Whatever they believe or not isn't impeding others' lifes.

The underlying point is about how much renewables and how much nuclear may we build in order to tackle current challenges (climate, pollution...), one of the criteria is waste and renewables win hands down.

> ocean disposal

AFAIK no expert now states that ocean disposal is OK, this is a settled matter since at least 1972 ( https://en.wikipedia.org/wiki/London_Convention_on_the_Preve... ), therefore a bunch of assessments of the current situation for stuff dangerous for at least hundred years doesn't seem pertinent to me.

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
> definition of safe?

Some claim that nuclear waste repositories are perfect (0 risk), and experts disagree.

> backfilling

Yay, such a superb gift to our children, their children, their children...!

The underlying point is about how much renewables and how much nuclear may we build in order to tackle current challenges (climate, pollution...), one of the criteria is waste and renewables win hands down.

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
Indeed, however it was loosing traction to the point of "The phase-out plan was initially delayed in late 2010, when during the chancellorship of centre-right Angela Merkel, the coalition conservative-liberal government decreed a 12-year delay of the schedule". https://en.wikipedia.org/wiki/Nuclear_power_in_Germany#Chang...

Protests weren't as strong as they used to be, and didn't change anything.

Then the Fukushima major nuclear accident happened (march 2011), the population demanded a quick nuclear phase-out, and no subsequent government even only attempted to neglect it ( https://x.com/HannoKlausmeier/status/1784158942823690561 ).

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
No containment is perfect. In French nuclear plants it has to "contain" most of the stuff for at least 72 hours, but no one sees it as a sealed repository and it sure isn't.
natmaka··on Germany drops opposition to nuclear power in rapprochement with France
The misdeeds of some (nuclear...) do not constitute mitigating circumstances for others (cars...).
natmaka··on Germany drops opposition to nuclear power in rapprochement with France
There are dissenting opinions: https://en.wikipedia.org/wiki/Asse_II_mine#Current_progress

In not-so-ancient times "experts" were also OK with ocean disposal. https://en.wikipedia.org/wiki/Ocean_disposal_of_radioactive_...

AFAIK few experts now judge adequate to use such mines, and many nations build dedicated repositories.

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
> one country should be able to influence other countries in the EU.

Who pays decide (Germany is the first financial contributor), that's business as usual.

> Whereas the CO2 is in the air

In the UE the question is how much renewables and how much nuclear will be built, and their (dubious) compatibility. Very few want to see more fossil fuel.

The "nuclear waste is a solved challenge" is funny, as experts explicitly state that there is no safe solution (due to risks induced by seismotectonics, intrusions, casks imperfections...).

It's the "Asse II mine" joke all over again: "there will be no problem" followed by "Ouch! Err...". https://en.wikipedia.org/wiki/Asse_II_mine#History

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
> Just like more people are afraid of airplane accidents

This doesn't compute: avoiding being a victim of a plane accident is rather simple: don't hop on any plane and your are something along the .99999 covered.

Avoiding being threatened (and many generations after you) by a nuclear major accident or erring 'hot' nuclear waste is way (WAY!) more difficult.

natmaka··on Germany drops opposition to nuclear power in rapprochement with France
Germany sets the tone in Europe (at least financially) and used to refuse to pay for nuclear power which (since Fukushima) it does not want at home and which, deployed in other nearby nations, exposes it to risk.

I suspect a trade/swap: Germany will obtain something from France in return.

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