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Mathematician: Is Our Universe a Simulation?

ezdiy Re:Silly language games. (745 comments)

TLDR: Quantum Turing Machine > Turing Machine. Our parent universe might be just another QC, but also something of even "higher state of being".

Blenders are not turing-complete ("computer") in our universe, but might as well be in the parent one - thus, we should not be discriminating against blenders.

Quantum Turing Machine can simulate both universes, TM or QTM efficiently. However running a QTM machine inside TM simulated universe is awfully impractical, as much are our current Quantum Computer simulators running on present day TM hardware.

This can be taken quite far from here. If we are just segment in chain of universes, each subsequent universe is inferior to previous one "for technical reasons". For example, our universes upper bound might be that of time, because creating simulation without flow of time might have been simply technically impractical for our Gods - their universe might have limits of its own to merit that.

about 2 months ago

Reason To Hope Carriers Won't Win the War On Netflix

ezdiy Actually, this is how peering agreements work (213 comments)

"Throttling" between autonomous systems is common.

Think of it as series of tubes, and between some places, the tubes are thinner. Usually wherever AS POP meet and the exchange arrangement is not settlement-free, but capped to some numbers in (either) direction. Or the port is simply running red-hot.

When two big ISPs refuse to reach a compromise on peering terms, it's usually the users who suffer. Think of the Sprint vs. cogent drama.

Commercial internet worked like that since uh ... always. ISP peering is market driven - that is, there is clearly "demand" for data from AWS, but Verizon is a monopoly which can afford to extort AWS to cough up money, and Amazon/whomever are reluctant to cave in.

Net neutrality term is a bit of oxymoron in the light of this, as there was never one to begin with. The problem is simply lack of last-mile competition in the US, as those operators are not pressed by competition to provide quality bandwidth to end users from relevant places as needed.

Refusing to peer with competing service, and offering local service of their own is entirely legit as well. As long the consumer is given choice of different ISP to flee to....

about 2 months ago

Getting Young Women Interested In Open Source

ezdiy Re:Not a question of preference (545 comments)

The sexism IRL is indeed there and hard to deal with.

Online, things are vastly different though. When women take the shortcut online ("look look, i have boobs and know ruby"), it's entirely their fault for watering down her credibility with that in front of predominantly male audience - men are inherently sexist creatures. If a woman wants to avoid that and be judged on actual merit without the "boob bias", how hard is to simply play it cool?

about 2 months ago

Getting Young Women Interested In Open Source

ezdiy Re:from a woman dev (yeah I'm posting anon) (545 comments)

Tech fields are meritocracy at its best, yet most "nerdy" women underestimate the concept, take a shortcut: "look, look, I've got boobs.". And are like "hurr durr, sexism." in turn. If you want credit, simply omit the fact you're a female for a while, and try to garner it on merit alone. The after-shock "A 'mere' girl did $THING?" effect is priceless and will earn you an actual respect/street cred.

C&H explains it well

PROTIP to deal with sexism IRL: Start a rumour you used to be a man until recently. Tranny homophobia can be actually pretty useful.

about 2 months ago

Red Team, Blue Team: the Only Woman On the Team

ezdiy Women are predestined to beat males eventually (247 comments)

Especially when it comes to hacking. Just a conjencture.

Obligatory western gender-equality cliches aside, the scene imploded the second things got commercialized by mid 2000s. From that point onwards, male hackers seem to suck horribly at team work. Trust issues. This leads to a lot of inefficiency and wheel-reinvention (to the point where independent 0day re-discovery is fairly common occurrence, if you wish, academic/famwhoring publishing seems to be lagging behind severely).

Women may be generally not as good equipped with spatial/critical thinking you need to posses in this field, but are much better in the social/information management/opsec aspect. One can expect that ultimately, sheer power of team work and more humble approach might vanquish male arrogance/ego (which is a good driving force, but isolates you a great deal).

about 3 months ago

If UNIX Were a Religion

ezdiy Re:Arch Linux (392 comments)

Noah's ark.

about 4 months ago

Free Software Foundation Endorses a "Truly Free" Laptop

ezdiy Re:Umm, okay, but... (340 comments)

Have you ever actually tried building this 18GB SVN tree?

It's certainly possible after you're forced to be deeply familiar with how it works (and write few custom scripts/makefiles), but obfuscating the process on purpose to prevent forks shows no good faith. This is borderline hostility towards GPL even if they try to be technically compliant. OEM firmware vendors are "compliant" by posting half-assed .rar of some outdated dev tree, dare to ask me to sign NDA (seriously broadcom? what the fuck with those kernel patches) and calling it a day.

I was just trying to add my language translation of the webui and ended up soldering serial to debrick my device few times.

OpenWRT is what GPL should look like, free, super easy to mod and test out changes, bloated and not very user friendly.

Sad truth is DD-WRT offers best stock features (luci is certainly lacking in some areas), especially on 4M flash devices.

PS: Eventually ended up compiling custom /etc/web and /usr/bin/httpd and fmk'ing existing binary image. Both files are interlocked to "prevent rebranding on ebay" causing major pita. </soapbox>

about 3 months ago

'Approximate Computing' Saves Energy

ezdiy Re:Analog (154 comments)

They live strong, reincarnated in MLC NAND flash cells exactly because flash was first thing to reach litography cost limits. It's not actually true analog, but close enough to keep precision.

about 4 months ago

'Approximate Computing' Saves Energy

ezdiy Overclocked GPUs, ASIC, analog? (154 comments)

SHA256 double hash applications were probably first who used this on massive scale. It's actually ok to ramp clock/voltage up 50%, get 30% more rate at cost of 5% of wrong answers (and halving MTBF). ASIC miner chip giving wrong answers now and then because of imperfect mask process (even before OC) is common too.

However numbers for standard-cell ASIC design don't seem much favourable, certainly not "doubling", much less energy saving (on the contrary, at ballpark 10-30% of OC you reach point of diminishing returns, and only if you dont care much about MTBF).

Now what would be interesting is actual "analog" computers, ie number of states anywhere between 4-inf - there is literally too much of wasted "potential" nowadays. NAND flash chips do it already because they are about to hit limits of cost-effective litography (10nm?).

about 4 months ago

Killing Cancer By Retraining the Patient's Immune System

ezdiy Obligatory (175 comments)


about 4 months ago

Ask Slashdot: Best Open Source Project For a Router/Wi-Fi Access Point?

ezdiy Re:OpenWRT on good commodity home ap (193 comments)

Anything you can't do in GUI.
Agreed, both DD-WRT and OpenWRT GUI can pretty much do the same thing, and I did recommend DD-WRT to amateur users in the past as it appeared to be somewhat more consumer focused.

Like custom samba settings. Or just want to use stuff which is up to date, not 3 years old binaries. Or openvpn server with authentication against remote ldap database. Geeky stuff. Scary, scary command line :)

Optware stuff falls a bit short in that regard, mainly because I want the router functioning without unreliable external storage and it is basically just a hack - making custom DD-WRT is messy (FMK? really?). Openwrt supports baking images nicely from day 1 using buildroot.

about 6 months ago

Over 100 Missing Episodes of Doctor Who Located

ezdiy Re:Interesting. (158 comments)

When you are forever alone, everything is possible! Ganbatte!

about 6 months ago

Ask Slashdot: Best Open Source Project For a Router/Wi-Fi Access Point?

ezdiy Re:Consider a Microtik Router? (193 comments)

I love MikroTik as much as nearly any other eastern european do - the gui/cli is just plain awesome and dumb proof - even people unfamiliar with networking are able to pick it up quickly, compared to the "horrors" of linux routers or cisco-cli.

Sadly, your point is somewhat moot - AR9132 chipset of RB2011UAS is just home ap SoC and that is it. Routing performance is generally god-awful to make any use of BGP or OSPF. People generally just buy high-end RBs or run routeros on PC to do any kind of ISP networking.

RouterOS comfort comes at a price too - it is just linux kernel inside, but 3 years outdated, undebuggable corner cases etc etc. It works ok most of the time, but only very brave people are running eBGP on RouterOS or any core backbone for that matter. Wiping low-end routerboard and installing openwrt there won't help much either - people do that all the time with the very same SoC chipset, from tplink, edimax etc plastic boxes which come 30% cheaper and are the same utter crap reliability-wise (usually PSUs).

about 6 months ago

Ask Slashdot: Best Open Source Project For a Router/Wi-Fi Access Point?

ezdiy OpenWRT on good commodity home ap (193 comments)

OpenWRT on cheapo commodity hardware - personally I'm using TL-WR1043ND, 4x1gigE/300mbps 2.4ghz N, USB storage is best bang for 50 bucks.

The system is reasonably specced to run openvpn gateway for home network and serve USB drive miniNAS via smb.

DD-WRT is basically GUI polish for people who don't wan't to delve into scary command line, but otherwise nowhere near as flexible as openwrt is.

about 6 months ago

Silk Road Shut Down, Founder Arrested, $3.6 Million Worth of Bitcoin Seized

ezdiy Conspiracy, full throttle. (620 comments)

Let me tell you exactly what happened:

Some vendor quit the business for whatever reason. He then posed as a hacker of himself, providing "proof" of the hack (passwords, adresses etc), demanding 500k. He then proceeded to lay out the "I owe money to these drug people, thats why I need the 500k" story. He somehow provides DPR with "real life data" of this hacker.

Then he poses as the group the hacker owes money to. He then accepts the offer of the hit, photoshops some picture and collects 150k from DPR.

Occams razor smoking dope. Why would the group accept 150k if they were owed 500k? Why did the data turn out to be fake and why was there no murder or missing person filed in the area? How would they even carry out a hit within such short notice in far away Canada?

Bonus points: The 500k and the vendor were undercover shills, that's never gonna show up in court proceedings for tactical reasons (aka entrapment in criminal law).

DPR got soceng'd hard.

about 7 months ago

400 Million Chinese Cannot Speak Mandarin

ezdiy Re:Make it easier (562 comments)

In China, too, the sheer pressure of population had forced an advance from ad hoc improvisation along predetermined Marxist-Maoist guidelines to a deliberate search for optimal administrative techniques, employing a form of cross-impact matrix analysis for which the Chinese language was peculiarly well adapted.

Well before the turn of the century a pattern had been systematized that proved immensely successful.

To every commune and small village was sent a deck of cards bearing ideograms relevant to impending changes, whether social or technical.

By shuffling and dealing the symbols into fresh combinations, fresh ideas could automatically be generated, and the people at a series of public meetings discussed the implications at length and appointed one of their number to summarize their views and report back to Peking. It was cheap and amazingly efficient.

John Brunner, Shockwave Rider, 1975

about 7 months ago

When it comes to (download) bandwidth needs, I require..

ezdiy Re:Apparently people accept garbage. (279 comments)

Lucky northern EU bastards. Mid-east europe, well generally anywhere with telcos pricefixing data transfers (that includes U.S.), its like 1GB-5GB cap with usual 20EUR/30USD plan. Classic story - its simpler to milk users with their 2yr contracts and provide crap service in duo/triopoly cartel, rather than actually compete and develop decent 4G infrastructure. Mostly 3G coverage, 4G only parts of big cities. Weird exception is romania which is almost as good, or even better connected than .fi/.ee for some reason.

about 8 months ago

No US College In Top 10 For ACM International Programming Contest 2013

ezdiy Re:Cheating (199 comments)

Yes, sometimes there are rumors circulating about what probable problems there will be, but never closer specifics. So yes you have to memoize and practice a lot of "useless" stuff to even stand a chance. Even if there will be offline version of wikipedia and wolfram available during those contests, memoizing at least the common stuff gives you incredible edge - because it's just not the knowledge but also an acquired skill of choosing and applying common algorithms to various problems.

Regarding "new" data set, I know how it feels, exact same thing (corner case data set) happened to me few times.

The key is to be not bitter and throw tantrums and baseless accusations the moment results are published, but actually look over the winner's code (heck, even post it online to wider forum, if you dare :), and find corner-case data set too, during the appeal period.

The first time I had to admit a loss - the guy's solution was perfect (or I was unable to spot the bug). The second time the competitor's code had similiar degree of a problem, just not so obvious from reading the code. Technically it would be tie, but good judge will give you bonus point for pointing out his mistake.

Now, this was in highschool state championship in small east-european country, not sure what ACM rules are, but I suspect it will be something similiarly reasonable

don't attribute to malice what can be explained by incompetence
Judges are human too.

about 9 months ago


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