* Posts by Alan Brown

15079 publicly visible posts • joined 8 Feb 2008

California cops pull over Google car for driving too SLOWLY

Alan Brown Silver badge

Re: If Google wants to limit the speed of their test cars/prototypes to 25 mph....

In most civilised countries it's:

Actual speed limit is determined by the greater of:

A: the posted speed limit

B: speed at which you can pull up in the distance of clear road ahead of you (halved if no center line)

Which means that 20mph on a motorway in heavy fog (sub 10 foot visibilty) is dangerously fast. I've been in fogs where you couldn't even see to the end of the bonnet and you effectively have to stop.

FWIW: 30mph is too fast in a residential or urban area, based on pedestrian survivability stats. 20mph is about right (and in many urban areas you'd have trouble maintaining that speed anyway)

That said: California has laws on the books about holding up traffic. Once you get a few cars building up behind you, you either speed up or pull over to let them past.

Ex-competition watchdog and TalkTalk adviser calls for Openreach split from BT

Alan Brown Silver badge

"But the regulator in NZ seems to some pull punches sometimes."

Yeah, at least a half dozen MoC investigations into anticompetitive practices by the telco shitcanned by ministerial order during the 1990s as soon as Mo became aware of them.

Not that it's indicative of brown paper envelopes, nosirree. That couldn't possibly happen in Clean Green Corruption Free New Zealand.

Alan Brown Silver badge

Re: It's an interesting idea, but more tricky than you think

"I'm not arguing against splitting it off, but just warning that we may end up with a whole set of new problems in the future if the regulatory regime is not really really well thought out."

The advantage this time is that the Kiwis looked at how the UK has messed it up(*) and that means their regulatory framework is a pretty good starting point.

(*) NZ used to be the poster child for how NOT to privatise your telco and after 25 years of monopoly abuse they knew they had to get it right when rewriting the rules or there would be blood on the streets.

Alan Brown Silver badge

yes, but.

"The Kiwis cut loose Telecom New Zealand's infrastructure wing four years ago, according the FT."

The Kiwis did it because Telecom NZ was actively pushing the BT/Openreach model (Spark/Chorus) and after studying the UK market plus noting the market abuse BT was clearly pulling, they decided it was better off split.

After lots of doom and gloom and "Chorus will be a liability" claims, it's the telco part which is in serious financial doo-doo as punters abandon it in droves. Chorus is running around selling dark fibre and duct access - not just to those who ask, but also making sales pitches to those who didn't think of asking, including former rivals.

In a UK model, that would be selling access to Virgin and thereby not having to rip up streets to push that cable TV market penetration upwards.

Openreach don't sell TV, so they shouldn't care what's on the fibres. The fact that BT do and BT head office control what Openreach sells - and how much it sells as well as how much it costs - means that they do care. Try buying dark fibre outside of a metro area.

iPad data entry errors caused plane to strike runway during takeoff

Alan Brown Silver badge

At least...

They didn't enter 22,300 pounds of fuel as 22,300kg

tail scrapes are less embarrassing than a deadstick landing in Gimli.

Next-gen killer hurricane hunter to be armed with Nvidia graphics chips

Alan Brown Silver badge

Re: Is it the resolution or the model itself?

Not so long ago, whilst investigating why 64 bit linux systems were giving wildly different (wrong) answers to various astrophysics problems, a researcher I work with discovered that the 32 bit systems were giving wrong answers too - and unfortunately they were treated as canonical.

The cause was found to be rounding errors, or more precisely, cumulative rounding errors.

Taking the output of IEEE FP calculations and using those as input for more calculations will give different results to doing the entire run in one go, depending on the level of precision you pull out as the answer in that intermediate stage.

The results of that discovery are still (quietly) bouncing across the astrophysics community. It will probably take a while before the full importance is realised.

When it comes to butterflies affecting hurricanes, the same kind of problem occur. Tiny peturbations in the input can result in huge errors in the output.

Aircraft laser strikes hit new record with 20 incidents in one night

Alan Brown Silver badge

"They should be sitting in a ground-attack aircraft."

The RAF and RN will have a suitable plane in a while. It's called the F35

Alan Brown Silver badge

Re: "...defence against laser..."

"First marketing approach was sheets of film installed in the aircraft windows just like window tinting is installed in cars."

The local oiks lase cars, cyclists and residential windows in addition to aircraft (their usual method of getting away is to duck into a pub when the helicopter shows up)

When they hit my lounge window about 30 degrees off axis the entire pane (1.2m square) went bright green and illuminated the room whilst preventing anything being seen outside. Apparently this is down to microcracking in the glass. Having experienced it I can see why it'd be hellishly distracting to a pilot even if he doesn't cop it directly in the eyeball. (I've caught that too, It hurt like hell and at least one other driver crashed into parked cars when he got struck).

I've been sorely tempted to liberate a cutting laser and use it to return the favour.

Alan Brown Silver badge

Re: Dangerous, stupid and highly illegal"

"some people get far more aircraft passing overhead than they used to."

It's bloody hard to lase an aircraft passing overhead. You need to be a long way away and able to shine it on the windows at the pointy end, which is why so many get painted when they're on finals (low and moving slowly)

This is more a stupid prat thing than a Victor Meldrew type response.

TalkTalk hired BAE Systems' infosec bods before THAT hack

Alan Brown Silver badge

Re: Churn

Moving from TT to Sky or Virgin is a bit like moving from a moving from a shit pile to an offal pile or a silage pile.

There are much better ISPs out there if you're willing to pay 5% more each month.

Alan Brown Silver badge

Re: "and previously told investors it had "completed" a security audit."

All a formal audit means is that they followed procedures and got ticked off as following procedures.

Nothing at all is done to check whether the procedures are appropriate, nor is it the auditor's place to say anything if they're not.

TalkTalk boss: 'Customers think we're doing right thing after attack'

Alan Brown Silver badge

Re: On my way

"My leaving was delayed a couple of weeks because their call centre (in Durban) put the wrong kind of cancellation on my account"

If your'e serious about leaving, NEVER give them advance notice. Just got to the other ISP and get them to do the legwork.

TT have a nasty habit of using the notice period to stall you, or (worse) to cease your line a day or so before the new ISP takes over which incurs a £100 reconnection fee.

Forced sale of Openreach division would put BT broadband investment at risk, says CEO

Alan Brown Silver badge

Re: New Builds

"Assuming the developer actually gives a flying ****, then the whole estate will be covered by ducting "

This is the kind of thing that can (should) be mandated, because all developers really care about is making as much money as possible for as little outlay as possible - even if that means putting 3/4 sized furniture into a show home to fool buyers.

Alan Brown Silver badge

Re: Rural Britain Wake Up!

>> There was no technical reason why the FTTC cabinets couldn't be full concentrators/DSLAMs

>Could you expand on that please? An FTTC cabinet is a concentrator and DSLAM. Or are you suggesting that they should also support older versions of DSL?

VOICE concentrator. DSL/VDSL DSLAM - ie, all fibre back to base, no copper, no stupidly long copper tails hanging off the arse end of the VDSL circuits.

Sound waves could power the future's magnetic HDDs

Alan Brown Silver badge

Ahem:

"However, while solid-state devices are much faster, they have a much shorter lifespan than hard disks before becoming unreliable, and are much more expensive."

Much shorter lifespan: not in my experience (hundreds of both). There's a reason consumer hard drive warranties were slashed from 5 to 3 to 1 year whilst SSDs tend to be 3-5 years and increasing.

Much more expensive: Not for much longer. SSDs are only 2-4 times the price for consumer devices and not much above that until you get into esoteric stuff with the kinds of demands which would wear out a mechanical drive in 3 months.

PostgreSQL learns to walk and chew gum

Alan Brown Silver badge

Re: MySQL versus PostgreSQL comparison

No matter how you try and give analogies they'll fail.

Here's my one.

MySQL is small and fast but scales up terribly.

PostgresQL is bigger and slower but scales up pretty well.

At 200 million entries (real world case), pgSQL uses less than 1/4 the memory and 1/2 the CPU that MySQL does for the same queries on the same data sets. (MySQL was up to 46Gb on a 48Gb machine, so it kept starting to swap).

That's a massively tuned MySQL vs a more-or-less out of the box pgSQL. pgtune was run later but it made very little difference.

Prison telco recorded inmates' lawyer-client calls, hack reveals

Alan Brown Silver badge

Re: Now I know

It's not the recording that irks inmates - it's the 1940s-era pricing for making long distance calls.

Patent and trademark troll stung for £500k after fake renewal blitz

Alan Brown Silver badge

"I'm would expect they found his company guilty and fined that"

In the case of scams, it's entirely possible to go directly after the company principals. It's known as "piercing the company veil" and isn't used nearly enough when people setup companies specifically to perform illegal acts.

Alan Brown Silver badge

Re: DVLA has scammers too

"Any time it's a company I'm not familiar with, out come the credit card instead of the debit."

Read the fine print. Most of the time protection is only given for amounts over £100

Now we know why Philae phouled up comet landing

Alan Brown Silver badge

Re: to all the naysayers ....

Not rocket science. Rocket science is easy.

Rocket _engineering_ is the hard part.

UK citizens will have to pay government to spy on them

Alan Brown Silver badge

Re: 15TB?

"The gov is not asking for *ALL* data to be stored, only some woolly-defined meta-data like the URL of each site accessed. "

A wget randomiser could fill those disks without impacting bandwidth much.

Civil disobedience. Would the ISPs then start charging for accessing too many web pages?

Old tech, new battles: Inside F-Secure’s formidable Faraday cage

Alan Brown Silver badge

Re: colour...

"Red = Dead!!"

And brown is a burnt red. My father can't tell the difference between the old red and the new brown, or the old red and the old green.

He _can_ see the stripe, but rather sensibly he doesn't even think about trying to wire up plugs (or anything else using colour codes)

Alan Brown Silver badge

Re: Colour blind risk

"it's for precisely this reason that the "green" traffic light colour actually has masses of blue in it"

Coming from a town in a region with a historic 28% rate of male red/green colourblindness and significant rates of others considered odd (yellow/blue and a few monochromats), the blue is extremely noticeable there - as is the word "STOP" masked onto every single red light.

The fact that the town's population has been shrinking and over the last 50 years has gone from 40 sets of traffic lights to 10 is another matter.

E.ON fined £7m for smart meter fail

Alan Brown Silver badge

Re: hmmm

"they can complicate the tariffs as much as DECC like, but it won't change demand unless sufficient poor people sit in the dark, shivering and hungry."

The New Winter of Discontent may change demand, but probably not in a way that the DECC envisages.

Alan Brown Silver badge

"The business might be a bit more enthusiastic if they would offer something more precise than a 6 hour window for when they want to take our office down."

Push back. Offer them an exact appointment time and a window to execute with penalties for no-show or overrun and make them wait 6 months for a new appointment if they show up late.

Alan Brown Silver badge

Re: What *customer* wants this?

"Renewables are not an alternative to building fossil fuel power stations"

Nuclear stations are though - and they're cheaper than "renewables" could ever be even at today's vastly inflated figures for the new ones, plus use a lot less space.

Molten salt nuclear plants can load-follow too. The ability is an inherent part of the design.

What renewables _really_ are, is a way of transferring a lot of money from the hands of consumers into the pockets of certain landowners. Forget "doubling" your power bill under Hinkley Point, if the UK was 100% powered by renewables the figure would be more like 6-10 times higher.

Alan Brown Silver badge

Re: What *customer* wants this?

"a surprisingly small percentage of our countryside and coast are "blighted" with wind turbines."

Given the small factor of blades being known to go more than a mile when one breaks, it will remain a small percentage or a lot of people are going to have to be forcibly evicted from housing located in the safety exclusion zones..

Alan Brown Silver badge

Re: What *customer* wants this?

"The good news is we can still buy energy (expensive) from the French who at least have a reliable supply."

No, we can't - and not for the reason another poster has already put forth (the french are ramping down their nukes a little), but a more practical reason that anyone who's looked at gridwatch should have been able to figure out

The french could have a massive energy surplus and it still wouldn't help the UK much: the _total_ electricity load able to be supplied between mainland europe and the UK is 3GW.

Underwater power interconnectors are not cheap, nor are they of massively high capacity. The 2GW french one is about as large as they go. Perhaps feeding the lines down the chunnel is a better idea than running trains in it.

Yay, more 'STEM' grads! You're using your maths degree to do ... what?

Alan Brown Silver badge

Re: Really?

"an anecdote about an astronomy conference"

I'll give you a real world one.

Most astronomers write code which is a pile of fetid dingo kidneys, complete with kludges sneaked in when answers don't match expectations. The few ones who don't, don't last long because 1: They get far paid more elsewhere with far fewer unrealistic demands being made of them 2: They realise the utter madness of writing complex code in IDL or it drives them insane and C'thul'hu grazes upon their souls.

When you realise that astonishing discoveries are being made despite this, it makes you wonder what would happen if said science types admitted they (or their undergrads/RAs) can't code and paid something more than peanuts to get decent people in to do the job properly.

Alan Brown Silver badge

Re: Huh?

"Or are they not worried about the science at all, but about about the climate? "

In my experience, the latter - although some are starting to concede that sea level and temperature may not matter that much as a global oceanic anoxic event is looking increasingly likely to take out a large chunk of the planet's megafauna before too many cities are drowned.

(The parallel to this is Apollo13. Their oxygen tanks might have exploded and everyone might have been concentrating on making sure they didn't suffocate or die of CO2 poisoning, but the overlooked thing that came closest to killing them was plain old hypothermia - and long before the oxygen ran out.)

Alan Brown Silver badge

Re: Huh?

FWIW anyone who does understand statistics will avoid horses and take ecstasy. One is _much_ safer than the other.

As for bacon: just about everything that's fried is bad for you at some level, so choose the best fried things and don't eat the rest. I'll keep my bacon.

Alan Brown Silver badge

Re: Bah!

"A first fix chippie wacking up a set of roof trusses for a standard build house on site..."

... is an oh so typically english waste of fucking time and money.

If it's a standard build then it can take a standard truss, made by the hundred in a factory, at ground level and under cover, then trucked out to the site and lifted on in an hour or so, meaning the entire roof can be finished in a day or less.

The UK is full of the kinds of attitudes and practices which helped the shipyards compete so well against japanese builders and gave us the likes of British Leyland - whose management seem to have spontaneously migrated into the real estate industry (substandard builds of substandard designs, only this time there are no floods of better designs coming in to show them up for being as bad as they are, the odd Huff House notwithstanding)

"But it's traditional" doesn't fly. So was dying young from a preventable bacterial infection.

Condi Rice, ICANN, and millions paid to lobby the US govt for total internet control

Alan Brown Silver badge

Re: Who are the internet comminity?

'One thing I've always wondered from Kieren's otherwise excellent articles on ICANN is who are the "internet community"?'

As far as ICANN are concerned, it's the people who pay them the most money, preferably without getting any power in exchange for it.

Alan Brown Silver badge

Re: ICANN is using internet community money to lobby against the internet community !

"You mean, what's to stop them from doing what the US are doing right now, under your nose, with your money?"

ICANN might well be operating under the auspices of a US govt contract but the US govt has made it clear that they are not happy with the way things are being done.

The antics of ICANN are the kind of thing that only a lawyer could devise and uncoincidentally the previous chair was one - he also engaged in the same kind of tactics when the chair of the Internet Society of New Zealand. ICANN was dodgy before then but under his watch it went into full-blown maliciousness. In the opinion of many, the _ONLY_ thing that ICANN staff and most of the board care about is the lining of their own pockets and the furtherance of their own control of power.

DC judge rips into the NSA over mass surveillance

Alan Brown Silver badge

Re: and in other news...

"So they can hack your machine, but make *you* lie about it!!!"

They can do that already.

Alan Brown Silver badge

> Even the NSA has admitted that the number of 'stopped attacks' is less than 100, not 'many hundreds'

In other news, both the NSA and GCHQ have predicted 50 of the last 3 terrorist attacks.

The fact that 47 didn't happen (and 46 of those probably only existed in someone's mind) is what they're taking credit for.

Alan Brown Silver badge

No, the NSA _say_ they have.

On the other hand if the USA didn't go around dropping bombs on foreign civilians, there wouldn't be a steady supply of pissed-off revenge-seekers queuing up to try and get it.

Ditto for the Federal govt's stomping all over individual and state constitutional rights since 1941, in an effort to stay on a war footing and therefore keep power federated instead of devolving back to the individual states as was supposed to happen at the end of ww2 (until the cold war fired up). US domestic terrorists do tend to have several loose screws upstairs but what's come out over the years has made even their deluded fantasies look tame at times.

What's been happening since 1990 is a combination of batshit crazy economic policy pushed by a sociopathic cocaine smuggler with a power fetish (search for "The ten reprehensible crimes of Ronald Reagan" sometime) and the US military-industrial complex thrashing around more and more frantically to keep itself in power, most recently by embedding itself into the economy so firmly that like a cancerous growth, removing them is going to damage the surrounding parts - but leaving them there will eventually kill the host.

There are several recent history lessons in what happens if you allow your military budget to become a tail wagging the dog and the most obvious one is the Soviet Union. Those F35s might yet turn out to be the straw that breaks the camel's back. Last time an aircraft turned out to be so overpriced and utterly useless at any task they dumped the F111B and came up with the F14/15/16 instead but the lesson learned from that was how to ensure your programs can't be cancelled, rather than "don't build flying pigs"

Alan Brown Silver badge

Re: Government Denying Wrongdoing

"Ironic just how much things stay the same despite changing so frequently."

The purpose of a president is not to wield power, but to deflect attention from the people who do.

UK lawmakers warn Blighty to invest more in science, or else

Alan Brown Silver badge

Re: Who cares about all that hard technical stuff?

There's nothing wrong with having performing arts academies, in moderation.

There's something wrong when their are hundreds of performing artists and only a few engineers paying for them.

Alan Brown Silver badge

Re: Not all sciences are created equal

"Not much use inventing and building widgets if your factory gets burned down in a riot because you neglected society."

At the moment your widget factory is going out of business because society was screwed over to the point where noone could afford them. After it closes and unemployment booms, it'll be squatted in and set fire to.

Alan Brown Silver badge

Re: When...

"But I actually get less now than I did 8 years ago because of bigger changes to the pension scheme contributions."

Less still when you factor in how much the cost of just about everything has risen in that 8 years.

At some point you need to say "much as I love the job, I just can't afford to work here anymore"

ProtonMail pays ransom to end web tsunami – still gets washed offline

Alan Brown Silver badge

When it comes to dealing with script kiddies, you don't draw a line in the sand and then keep stepping back to draw a new one when they charge over it.

That tactic was tried 15 years ago and didn't work so well then either.

Alan Brown Silver badge

"Any kid with a botnet vained from a virus-making kit."

It reminds me of a replay of the IRC wars back in the late 1990s.

Once the script kiddies established they could make the IRC server owners do what they want, they proceeded to DDoS those who had the temerity to stand up to them. Several companies went under as a result.

Of course back then, the "law" didn't want to know about it until some of the kiddies went too far and took it into real life. One of them ended up with a very long stay indoors after attempting to murder the FBI agent investigating his antics.

Relevance? Many of those script kiddies then are the hardened cyber criminals now.

Space fans eye launch of Lego Saturn V

Alan Brown Silver badge

"It's also a shame that they've left the escape mechanism attached to the Apollo craft in the poster."

Future modules (dragons) will leave it attached, as it's part of the landing system.

Huawei who? We probe the sleeping storage dragon's brains

Alan Brown Silver badge

I didn't buy Huawei Storage

For only one reason:

The underlaying filesystem wasn't ZFS. Everything else was good.

IxSystems got my money. This time.

NASA photo gallery: How to blow $200m of rocket in seconds

Alan Brown Silver badge

Re: "toxic jet fuel coated the entire site"

"I also hear that hydrazine motors moved to the museum better be underneath a glass box, "

Not just motors. Anything that was along for the ride, even if it spent several weeks afterwards sitting 8 feet down in the mud of a gyuanian swamp. (As the part that's sitting under glass at $orkplace did)

Lithium-air: A battery breakthrough explained

Alan Brown Silver badge

Re: Oxygen makes things burn brightly

"NASA learnt this the hard way with Apollo 1."

What NASA learned is that 100% oxygen at 17psi (atmosphere is about 14 and partial pressure of atmospheric oxygen is about 3-4) is a spectacularly bad idea.

At that kind of concentration velcro will burn explosively (which is what happened once a spark happend)

Recharging a battery can release significant quantities of both hydrogen and oxygen already but basic safety precautions deal with that. Traction batteries are larger but the principle is the same.

AMD sued: Number of Bulldozer cores in its chips is a lie, allegedly

Alan Brown Silver badge

"I note that x86 emulation has been tried several times and has yet to catch on"

x86 emulation is _exactly_ what both Intel and AMD do.

The cores haven't been native x86 for a _very_ long time (486 days or earlier)

Alan Brown Silver badge

"AMD do need to significantly improve their IPC"

And their thermals.

UK's internet spy law: £250m in costs could balloon to £2 BILLION

Alan Brown Silver badge

"Maybe the fact that the costs are not yet known suggests"

That they're fully aware of how much it could end up costing but want to keep that hidden away so it will pass.

Civil disobedience in the form of https everywhere and programs which randomly crawl the Internet can easily push those costs even higher.