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zzbn00

255 karma · joined November 14, 2019

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zzbn00··on The path to detecting extraterrestrial life with astrophotonics
Lots of exciting possibilities in here and good work by the authors previously but this one is a bit of "white paper" paper describing what could be done in the future if the money is there
zzbn00··on U.K. rejoins Horizon Europe research funding scheme
Good Q & A here:

https://ec.europa.eu/commission/presscorner/detail/en/qanda_...

Including interesting details of the over/under performance condition.

zzbn00··on UK Post Office: 700 Horizon software scandal victims to receive £600k each
This is the key. The prosecutions were all "private prosecutions" by the post office, in which a private entity begins (and sometimes carries through to end) a prosecution _on behalf of the people_.

There is an enormous amount of incredible litigation behaviour by the post office in this case. The problem for them is: it all came to trial in the end and its there for everyone to read in painful detail.

Here is, for example, the post office trying to remove the judge in the case after it all started unraveling:

https://www.bailii.org/ew/cases/EWHC/QB/2019/871.html

And in 929 of https://www.bailii.org/ew/cases/EWHC/QB/2019/3408.html the Judge writes of Post office senior officers refusal to accept to flaws of Horizon even very late in the game:

"This approach by the Post Office has amounted, in reality, to bare assertions and denials that ignore what has actually occurred, at least so far as the witnesses called before me in the Horizon Issues trial are concerned. It amounts to the 21st century equivalent of maintaining that the earth is flat. "

zzbn00··on Arm IPO to kick off today
There is one timing-related disclosure in the F-1: The Kronos guarantee
zzbn00··on “This Is a Disaster:” Game Developers Scramble to Deal with Unity’s New Fees
This is the key. Companies that lose money are unreliable long-term partners.
zzbn00··on CHART: Completely Hackable Amateur Radio Telescope
In intensity interferometry the phase is not measured, and the timing accuracy is I believe only proportional to the desired effective bandwidth of the measurement. It was done in 1950's with bandwidths ~10 MHz -> 0.1microsec accuracy, should be do-able with SDR. Intensity interferometry is a bit of mind-twister...

(Another at first surprising thing is that radiation received from celestial sources is only coherent because of their very small apparent size -- the sources themselves are not coherent at all, because their physical size is very large)

zzbn00··on CHART: Completely Hackable Amateur Radio Telescope
Could try intensity inteferometry? A good mental exercise

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

zzbn00··on London Street Trees
Yes, although on this map I think the trees in parks are not shown
zzbn00··on Every software project is a startup that will probably fail
Developers are gonna develop... I agree if you give them a "new" software project risks are high and chance of success surprisingly low. Making do with existing software often better choice.
zzbn00··on When SoftBank is selling, why are you buying?
The problem for this listing as I see it is that yearly profit Arm makes is about £600 million.

If you had £10 billion three years ago you'd be lucky to earn 100 million in interest. Today you can earn very near £600 million / year just in commercial paper on £10 billion of capital.

(Or if you retail, the UK government will pay 6.2% interest on up to £1million!)

zzbn00··on When SoftBank is selling, why are you buying?
Between the various articles this week I learnt about the Kronos gurantee described in the F-1 (https://www.sec.gov/Archives/edgar/data/1973239/000119312523... Note 19). As I understand it if Arm does not list by the end of September the company itself would be loaded with $8.5 billion debt gurantee. Not end of the world for the company but a big incentive to list now.
zzbn00··on When SoftBank is selling, why are you buying?
Yes it was more than just thinking. However the firm commitment from NVidia was I think only $33.5 billion . The other $5billion was contingent on future performance (don't know the terms) and 1.5billion was for staff.

https://nvidianews.nvidia.com/news/nvidia-to-acquire-arm-for...

zzbn00··on British Court: Patient Can Be Denied Life-Sustaining Treatment Against Her Will
UK has three separate legal systems -- England & Wales, Scotland and Northern Ireland. This is case is in England & Wales and only reflects the legal position there
zzbn00··on An unexpected uptick in cigarette smoking in Germany
Still common in Munich area -- can see them on many corners of quiet residential neighborhoods
zzbn00··on The OpenTF Manifesto
A company that loses money is a dangerous long-term partner, full stop.
zzbn00··on Water Cooled Rooftop Solar Panels
This type of technology has been around for a while, there are some commercial offerings in the UK -- search for PV-thermal. Should be a useful source of heat into a heat-pump system, either for space or water heating...

The whole idea though probably makes more sense though on easy-access flat roofs rather than pitched roofs so why the tile?

(And why do we still make pitched roofs if we are doing energy efficiency? Much better to condense out as much of the internal moisture as you can to recover the heat from there)

zzbn00··on Qalculate – A multi-purpose cross-platform desktop calculator
I also tend to just use a CAS, specifically maxima (either commandline, via emacs, via wxMaxima or via notebook, see https://github.com/robert-dodier/maxima-jupyter ). It has the plotting, great units etc, and also incredibly handy to do things like a taylor expansion around a point with no effort.

If not maxima, then the old M-x calc will usually do the job

zzbn00··on Ferromagnetic half levitation of LK-99-like synthetic samples
"Those who do not learn from history are doomed to repeat it."

somewhere I read the a good addition to this:

"and those who do know history are doomed to watch it being repeated"

zzbn00··on Journalists should be skeptical of all sources including scientists
Very much so, and especially since a scientific paper that was published (after peer review) means that it is of interest to other scientist, not that it is a fact.

But there is also another good point in the post: scientist need to be full and frank in their scientific writing. Selectively reporting results creates a huge problem in the literature.

But unfortunately this creates rather less hype which is what even research institutions increasingly need to survive it seems

zzbn00··on Advanced Python Mastery
The author is of this course is also one one of the original authors of SWIG which got discussed here just yesterday. Two HN front pages in two days!

https://news.ycombinator.com/item?id=36769912

https://www.swig.org/guilty.html

zzbn00··on Office 365 Copilot Pricing: $30/month per user
$30/month for a mail/document filter which automatically junks AI-generated material would be better value....
zzbn00··on Swig – Connect C/C++ programs with high-level programming languages
I know there are many newer tools with various advantages. But I've used SWIG bindings in production for almost 20 years and some of the code is still live. An amazing achievement of the SWIG developers. So the stability and longevity are big advantages as well as the ability to adjust how the C++ code is exposed without actually changing the C++ sources.
zzbn00··on Gitlab.com is down
There is the git send-email & co. I understand the extreme convenience of things like github and gitlab but as everything moves onto them it does seem we are becoming really dependent on a few sites.
zzbn00··on First 'tooth regrowth' medicine moves toward clinical trials in Japan
Also surprised, it seems to make such a big subjective difference. One tip I got from a busy dentist who did not want more business: smear a little toothpaste on the floss before using it, work through all the places where teeth contact. Gets flouride in places where it normally would not get to.
zzbn00··on Object-oriented Programming with ANSI-C (1993) [pdf]
The C Object System looks like an interesting way of doing this today:

https://github.com/CObjectSystem/COS

and

https://arxiv.org/pdf/1003.2547.pdf

zzbn00··on Pricing Money: A beginner's guide to money, bonds, futures and swaps
One example which is applicable to majority of the working population: in the UK at least the fixed-rate mortgages are priced off the Swap rates as that is how banks hedge them.
zzbn00··on The Guardian bans all gambling advertising
I don't know about Guardian specifically, but marketing spend is a big part of what the gambling companies do: e.g. GVC spent about £500million on marketing in 2019 https://entaingroup.com/wp-content/uploads/2020/04/GVC-2019-...
zzbn00··on Working quickly is more important than it seems (2015)
I don't know, this is good advice perhaps for things which are not important.

But, if you are writing an email to a person whose time is valuable, better not to do it quickly. Save a draft, come back to it tomorrow, read again, then send.

If you are writing a legal document, don't do it quickly. Write it, come back to it again to review. Is it still a good idea?

If you are doing something completely new, do it slowly and step by step -- if it is new you don't know if it is right without checking each step.

If you have an idea, read the literature, patents, see what is out there first.

zzbn00··on Every Signature Is Broken: Insecurity of Microsoft Office’s Ooxml Signatures
Yes, and in fact contract and invoices are bad examples because they involve exchange of something from both sides so denying them is very often a futile task. Better examples would be things like wills and deeds but because they are good examples they have careful witnessing and verification requirements :)
zzbn00··on Every Signature Is Broken: Insecurity of Microsoft Office’s Ooxml Signatures
As an interesting edge case, in an auction contract can be formed without words either: it is formed on the "fall of the hammer" https://www.legislation.gov.uk/ukpga/1979/54
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