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grkvlt

1,544 karma · joined May 10, 2012

distributed systems hacker.

open source contributor to hyperledger sawtooth and seth, apache brooklyn, jclouds and qpid; enterprise software engineer; java, big data, cloud, security, open source, distributed systems, messaging, virtualisation, lolcats.

    mailto:andrew.kennedy@cloudsoft.io

    https://github.com/grkvlt
    https://twitter.com/grkvlt
    https://speakerdeck.com/grkvlt

    https://abstractvisitorpattern.blogspot.co.uk/
    https://grkvlt.blogspot.co.uk/
submissionscomments
grkvlt··on The Titanic Was on Fire for Days Before the Iceberg Hit
What if you murder someone that everybody hates, and who in turn hated everybody?
grkvlt··on 50 CVEs in 50 Days: Fuzzing Adobe Reader
dvi files are about as user hostile as it gets for a rendered document format, though
grkvlt··on How I changed the law with a GitHub pull request
So, essentially, the pull request process is useless. In fact, even changing a typo could be seen as a substantive change since it may not always be 100% clear what the correct change is. For example, in the Colored Object Restrictions Act 2018, Section 12.3.7 it might say "It is not permitted to have purple colored caqs within the city limits." could be talking about 'cats', 'cars' or maybe 'caps', and although it's obvious a typo has slipped through, these possible fixes all have very different meanings. And in the cases where the typo is obvious, and there is only one possible interpretation of the text, it doesn't actually matter and the change wouldn't have any impact...
grkvlt··on Superintelligence: The Idea That Eats Smart People (2016)
> Wouldn't it be better to simply motivate the cat to get in the carrier with a can of tuna fish?

One does not simply motivate a cat with a can of tuna fish. I mean, have you even owned a cat? If the little bastard doesn't want to get in the cat carrier, no amount of delicious tuna will encourage it, and you're going to end up using brute force and getting mauled...

grkvlt··on UFOs spotted off Irish coast under investigation
Looking at the wiki page, it seems the population on the island is decreasing. Hopefully they will either all die, thus relieving us of the ethical dilemma, or India will come to its senses and stop the abuse of these poor people and actually help them. Its criminal that they are allowed to carry on without access to any of the modern world's technology or services. And of course the islanders that killed those fishermen should also be forcibly removed and punished - murder is murder, and the fact that someone is pretending they are still in the stone age has never been a recognised defense...
grkvlt··on SCCS: The Posix Standard Source Code Control System (2017)
Because they want a DVCS that has less characters in its name, to save on typing? Mercurial [0] is a fairly popular choice these days, I believe, and uses 'hg' as its command line tool.

0. https://www.mercurial-scm.org/

grkvlt··on British intelligence hacked Belgacom then sabotaged investigation
From that wiki page, we have:

> According to Meyers Enzyklopädisches Lexikon, Central Europe is a part of Europe composed of Austria, Belgium, [...] as well as northeastern France.

and:

> Nevertheless, [Benelux countries] are occasionally mentioned in the Central European context due to cultural, historical and linguistic ties.

It's needlessly pedantic to pick on this part of the OPs comment when there are bigger issues evident: it just detracts from your main point.

grkvlt··on Despite concerns, FDA approves new opioid 10x more powerful than Fentanyl
That USD 4500 for two is nonsense. In the UK, they are GBP 15.30 each, according to this report: https://www.sciencedirect.com/science/article/pii/S109830151...
grkvlt··on Micro.blog
Also interested to see how this solves the 'hate and harassment' problem. Will the USD 5.00 fees cover things like background checks for extreme viewpoints, handle verifying real identities to check against blacklists, and pay for moderators to review posts for harassing content, monitor user complaints, and adjudicate between parties that feel they have been wronged or unfairly treated. Then there's fake news - they could use ML algorithms or pay for human fact checkers to verify posts, but the problem of dealing with mistakes and false positives is still there.

Like the previous comment states, this might be easy to handle when the users are a small group of like-minded friends, and maybe simple ad hoc processes will do for a while after that. The problem is, these sites are only useful when they have a much larger user base, but scale will also bring exactly the same expensive and difficult problems as FB, Twitter etc.

Something to bear in mind as well is that online hate and harassment is not new. Pretty much immediately after the first electronic forums or message systems were created and made available to end users, the problems started. The issue is with people, not the technology, so technological solutions are not the answer...

grkvlt··on Redefining the Kilogram
What do pennies (or pence) have to do with imperial units? A penny is exactly 1/100 of one pound sterling or GBP 0.01, which is a nice metric style power of ten division of the larger unit. If you want monetary units more congruent with imperial, then you may be thinking of l.s.d. or librae, solidae and denarius - pounds, shillings and pence - with twelve pennies to the shilling. Note this is UK only, I don't think the USA ever had non decimal currency?
grkvlt··on Lawrence Livermore National Lab's powerful new supercomputer
The compute platform overview pages [0] list all the HPC systems at LLNL. It's an incredible list, with a huge amount of TFLOPS, GBs, CPU and GPU cores available. The systems range from small 50 TFLOP, 20 node Xeon CPU Linux clusters up to the multi PetaFLOP POWER9 and Nvidia GPU monsters with millions of cores. Not sure what the total compute power available across all lab systems would be, although I guess it will be dominated by recent installations like Sierra - maybe 250 PFLOPS? Anyway, impressive engineering....

0. https://hpc.llnl.gov/hardware/platforms

grkvlt··on Lawrence Livermore National Lab's powerful new supercomputer
So, Lassen looks to be a 'mini Sierra' with ~20% performance but can be used for unclassified jobs, whereas Sierra is only for classified work, right?
grkvlt··on Tiny Books Fit in One Hand. Will They Change the Way We Read?
Spiral binding is the solution, but it looks ugly, there is no spine area anymore and the pages rip out more easily. Good for technical manuals, less so for fiction.

I do actually have a few 'publishers proof manuscript' (presumably for pre-press copy editing and review) spiral bound copies of books that I found in a second-hand shop, and although easy to read, the pages got crumpled and torn very quickly when I transported them in my backpack.

grkvlt··on Tiny Books Fit in One Hand. Will They Change the Way We Read?
Wow, your very own 'Flipback' copy of Cloud Atlas can be had for just over GBP 200 [0] according to Amazon! Are they that rare? Hopefully you kept your copy in good condition - eBay awaits...

0. https://www.amazon.co.uk/Cloud-Atlas-Flipback-Publisher-Pape...

grkvlt··on Massive octopus nursery found in deep sea
I believe the problem is that the octopuses (or cuttlefish, same problem) slowly produce less and less fertile percentage of eggs. So, first year 100%, then 50%, 20%, 5% then all sterile after five years, that sort of thing. And so far nobody really understands what we are or aren't doing, or what special nutrient, mineral, bacteria, plankton, something is or isn't present in the environment...
grkvlt··on Massive octopus nursery found in deep sea
Isn't the plural octopodes?
grkvlt··on The backlash against overtourism
So, not for science based reasons then.
grkvlt··on The backlash against overtourism
> voluntarily switch to a low-carbon, low-oil, low-net water use, low-net-material use economy

What about this is not hugely disruptive to lifestyles and standards of living? Its hardly an 'easy' solution to tell people to give up many modern conveniences or radically change behavior...

grkvlt··on The backlash against overtourism
Just out of interest, what solutions did you discover that fit those criteria - no large disruption to most peoples lives, but suppressed by industries that stand to lose money? I think the problem is usually more that solutions require both large and disruptive changes to lifestyle and large investment and costs from industry and government...
grkvlt··on A recent experiment may have placed organisms in a state of quantum entanglement
Not sure that the artist which produced the image (An artist's concept of quantum entanglement between two atoms) has really understood what quantum entanglement is... I'm pretty sure it's not a sort of lightning bolt/spark of electricity joining the entangled atoms, anyway...
grkvlt··on Stephen Hawking’s Final Paper: How to Escape from a Black Hole
No. As I understand it, it is exactly that - the Hawking radiation is how the information escapes.

EDIT - See https://en.wikipedia.org/wiki/Black_hole_information_paradox for more details, and note that I may well be wrong...!

grkvlt··on Lion Air crash: Boeing 737 plane crashes in sea off Jakarta
How does this work in practice, since I can imagine a situation where using the local air pressure value, altitude is measured at 18k feet - then, switching to the standard setting of 29.92, it turns out that this converts to an altitude of 17.5k feet - so, now the system switches back to using the local air pressure for calculations - and so on... Is there some form of hysteresis or rounding used, or would this never happen in practice?
grkvlt··on Lion Air crash: Boeing 737 plane crashes in sea off Jakarta
the bodies depicted in such images are not capable of caring about how they are treated anymore, though. i agree that often relatives get upset about images of their loved ones bodies being used in newspapers or tv, but sometimes the journalists have to weigh the public interest value of showing the image against potential distress. for example, the famous vietnam 'napalm girl' photograph. i'm not suggesting a return to 'if it bleeds, it leads' shock-value journalism, just pointing out that sometimes distasteful images have real value and should not be censored.
grkvlt··on Cannabis is legal in Canada: What you need to know
If your worst border crossing experience ever is being sent to the back of a queue to fill in a form again, then i suspect you have no idea of what an actual bad immigration or customs interaction might involve.
grkvlt··on To Heil, or Not to Heil, When Traveling in the Third Reich
FYI, you misunderstand my point. I have no issue with cannabis or cannabis usage, and absolutely agree that the way the 'war on drugs' has been prosecuted is wrong. But this has nothing to do with the fact that cannabis is a plant. The same things would be true if it was an entirely artificial substance, manufactured in a lab, or if it was some kind of animal extract. Why should its plant-based origin have any bearing on anything?
grkvlt··on To Heil, or Not to Heil, When Traveling in the Third Reich
The whole 'But marijuana is a PLANT, it's part of NATURE, man!' argument is specious. Just because it's a plant doesn't mean it's all great and should be legal. There are plenty of poisonous plants, which if you make preparations based on them by purifying or extracting essential oils, you would quite rightly be locked up for possession.
grkvlt··on Snapchat CEO’s leaked memo on survival
I've heard various 'arguments' that the US is not a democracy, but not based on the fact that one person-one vote is untrue; what do you mean by this? Is it something to do with the electoral college system, or perhaps the large class of disenfranchised persons?
grkvlt··on Personal Statement of a CIA Analyst
By leveraging the fact that one is a UK citizen, and applying to SIS or GCHQ, I assume? Most other countries perform in-depth background checks, rather than relying on pseudo-science, when it comes to matters of national security.
grkvlt··on Voice Phishing Scams Are Getting More Clever
Note that on many land-lines this will fail, as the calling party simply does not hang up, waits for silence on the line, then plays dial-tone down it. When you pick up again, it seems like you are connected to the exchange, but when they hear DMTF they just play ringing tones back at you, then pretend to answer as your bank and continue the scam. Bonus points to the scammers if they actually call the number you dialed and MITM the call for extra realism, only jumping in when you get transferred... ;) In fact, I bet you could program Asterisk to do this for you, or similar VOIP PBX software?
grkvlt··on In Praise of Mediocrity
Yes, you are basically an 'unusual athlete', at least in this regard. Going along at top speed or riding up a steep hill takes effort and the last thing on most people's minds is their facial expression - so they might assume an expression that allows easy breathing or possibly tense all their facial muscles.
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