* Posts by Alan Brown

15079 publicly visible posts • joined 8 Feb 2008

Musk claims that venting liquid oxygen caused Starship explosion

Alan Brown Silver badge

Re: Re:Musk being on the left?

Sanders has been on the "jobs jobs jobs" train for decades - despite us all knowing that even if businesses return to an area, most of the jobs won't

The primary reason businesses move manufacturing/etc bases isn't "cheap labour" but "automation" - it's much harder to lay of 75% of your workforce in-place than to simply up sticks and start from scratch elsewhere (Classic example: 12,000 employee car factories in Detroit became 1500 employee car factories in Sonora - whilst the rhetoric was about "cheap mexican workers", those workers are actually extremely well paid and it's merely a distraction. The British ship building industry lost to Japan for the same reason and Japan lost to Korea because the Koreans developed modularised techniques which vastly reduced the amount of time lost to labour simply getting on/off the jobsite)

Alan Brown Silver badge

Re: Musk is known for being on the left

"I am against a general smoking ban because it's none of my business what people are doing with their lives"

It becomes my business when their activities give me migraines (which tobacco smoke does - and the fumes from a smoker even after they put it out and go indoors are sufficient to trigger it for several minutes afterwards - in things like shop queues it becomes essentially unavoidable - that's without smokers ignoring smoking bans in enclosed areas or smoking just outside building windows - some of them actually ENJOY causing problems for other people - the same mentality as wankers who break other people's things for shits and giggles)

Alan Brown Silver badge

Re: Deluge

"Tesla wasted tons on automating parts of their assembly line"

For the very simple reason that Musk is vhemently anti-union and the "easiest" way to eliminate them is to eliminate humans entirely even if it costs more up front to do so

Meatbag do better _for the moment_ but improved machine vision and processing power is likely to change that equation. Let's not forget that assembly line workers were more than happy for robots to take over the dirty and dangerous functions on lines and only became upset when robots started encroaching on the easy work

Alan Brown Silver badge

Re: Deluge

NASA's flame trenches are rather famously overengineered (and were created only after unfortunate earlier experiences) _incredibly_ expensive to build and thanks to the high water tables had to be built on top of the existing ground level (hence the mounds and infamous ramps for each launcpad, with the massive engineering challenges needed for the crawler to not tip over its payload as it ascends)

SpaceX was trying to build mitigation without excavation and the costs of the flame plate is still far lower than NASA's trench/mounds, let alone the engineering challenges posed by getting stacks into position on them

How Sinclair's QL computer outshined Apple's Macintosh against all odds

Alan Brown Silver badge

Re: Love/Hate

I recall them being sold as "stringy floppies" and saw them fail more times than they worked

Can you dig it? Samsung buys chunk of a Canadian nickel mining company

Alan Brown Silver badge

Not just nickel

It may surprise some, but cobalt is usually found alongside nickel, silver and copper deposits (but until recently not worth mining, so tailings are full of it)

Samsung is proabbly eyeing up some futureproofing given that it usually takes 20 years for any given mine's production to match demand

Enterprising techie took the bumpy road to replacing vintage hardware

Alan Brown Silver badge

Re: We were not gentle, and each RM03 had a rough journey

"just occasionally the drive wouldn't spin down"

Usually because the bloody thing was still mounted and computers tended to react badly to finding the storage they were accessing had gone away without warning

A "fault"(*) which was replicated in scsi tape days by requiring ALL initiator-terminator locks were removed before releasing a device (which could be "rather a few unexpected ones" in the case of multipathing

(*) Not a fault in the kit, a fault in the operators/programmers for not checking for this possiblity

Alan Brown Silver badge

Re: We were not gentle, and each RM03 had a rough journey

As noted, a realignment was almost always what was actually needed - remember they parked heads off the platters

It was far worse if mains was applied to sensitive parts of the low voltage circuitry by way of a "PSU fault", usually resulting in widespread release of Magic Smoke

Alan Brown Silver badge

Re: Someone wanted a new laptop

I recall having seen this done with a red Ford Ka (complete with black dots) as the booby prize https://www.flickr.com/photos/48703330@N06/with/4461400014 for an example

It was joined a few months later by a black one with yellow dots

This was doubly effective because of the faff that reps had getting stuff into/out of the things

WTF? Potty-mouthed intern's obscene error message mostly amused manager

Alan Brown Silver badge

Re: hexadecimal, DE AD BE EF

That too. Words are good for triggering pattern recognition in hoomons

Alan Brown Silver badge

Re: Impossible you say? Maybe unsinkable, huh?

Correct.

For the record the claim was that due to the double hulled design "the ship was its own lifeboat"

The concept of smacking into ice mountains ten times the size, weighing 100++ times more than the ship and with all the "give" of a granite mountain or that cast steel plates of the era became almost as brittle as glass in freezing conditions wasn't something that had crossed designers' knowledge set at the time (all their tests were in english conditions, not arctic ones and they thought of icebergs as little things they'd seen in Northern European waters)

Alan Brown Silver badge

The first step to speaking any foreign language well is to learn how to swear like a sailor in it

Alan Brown Silver badge

Re: Errors that *should* never occur

Yup

I've asked users to quote the exact error message to me and they've been unable to do so - even when I can clearly read it over their shoulder on the screen - assuming they didn't immediately close it and then tell me there's no error message and it just did nothing at all

These are senior management with multiple PhDs too

Having got them to actually read the words out loud and asked them what they think it might mean (for the actually useful error messages - like email addresses must be addressed to someuser@domain.name and not left blank) - they'll throw their hands up in horror at being asked to THINK

There's old joke about "having a little dinosaur pop up waving a rainbow flag" being about the only way to get them to succinctly tell you what is happening - and it's scarily accurate

I was once disciplined for writing an email that stated that one particular user should be put in a job where she should be allowed to control nothing more complicated than an etch-a-sketch - someone forwarded her a copy of it. HR were trying very hard to conceal their laughter (She'd just cost us a week of downtime in her office, having bypassed all the antivirus software to open a spam email attachment on the basis of "it must be important" - for the THIRD time in a month.) She also complained loudly about my lecturing her as if she was five years old about the amount of time and money my staff had wasted cleaning up all the infgested machines she'd triggered (it was the third time I spoken to her and I was rather tired of it...). I was having to bite my tongue to stop saying what I really thought of her behaviour or question who she'd "done favours" for to land the job in the first place

Alan Brown Silver badge

Re: ""Karens" may not have been a thing then"

I've always thought "Hagathas" was more appropriate

BOFH: We've made a big mesh, Boss. That's what you wanted, right?

Alan Brown Silver badge

Simon's behind the times. I was able to localise rogue APs easily with my managed WiFi network - and more importantly, spin up those boss trolling SSIDs in a couple of seconds in random locations

BOFH: Adventures in overenthusiastic automation

Alan Brown Silver badge

while true do

BOFHism

done

would solve it

Alan Brown Silver badge

A real "proper" AI robot war instead of glorified RC toys could be........ fun

Alan Brown Silver badge

Re: "Please tell me, the mod is available for all tesla cars"

Or it's installed very shortly after purchase

Alan Brown Silver badge

Re: Good use

Not quite as bad with the HIDs in my Nissan, but the lamps lasted 12 years. I know I'd have been replacing them more frequently for halogens

What got me was the wild variation in prices - £120/bulb from Nissan vs £25 for the identical Philips bulb from a factor (NOT Halfrauds - they were almost as expensive as Nissan)

What gets me is the tendency to overdrive LEDs so they have bulb-like lifespans. FFS they should last 20 years in automotive applications and manufacturers should be getting fined for producing ones that fail in service

BOFH: Nice air conditioning system. Would be a shame if anything happened to it

Alan Brown Silver badge

There's already a cottage industry revolving around jailbreaking these devices

Did you think Tuya Cloud (and friends) would be free forever? (That's the real risk, not some nebulous "Chinese spying" handwavery)

APNIC: Big Tech's use of carrier-grade NAT is holding back internet innovation

Alan Brown Silver badge

Arbitrarily small LAN netmasks simply don't happen in IPv6 unless you're deliberately setting out to break things, so this is a straw man

Alan Brown Silver badge

Re: That old chestnut

"You typically need an intermediary or a proxy that both ends are connected to"

Congratulations. You just created a backdoor into your network that can be exploited (and was (still is) - heavily - by hackers attacking Chinese IP-based cameras/DVRs)

Alan Brown Silver badge

Re: That old chestnut

IPv7 (TP/IX - RFC 1475) and IPv9 (TuBA - RFC1347) were are both attempts to extend IPv4 which broke its backwards compatibility whilst being more complicated and less usable than IPv6

IPv5 and 8 were voice protocols and merged into SIP

NAT "firewalls" are dangerous coincidences (They're an artifact of the translation process, not an actual firewall) and anyone relying on NAT for protection is simply counting down to WHEN they get pwned, not IF

(TuBA encapsulated IPv4 in CLNP packages, TP/IX extended addressing AND port ranges)

Ironically, IPv4 was originally proposed with 128-bit addressing but shouted down as being too big for a research network with v4 intended for a 5-year lifespan

The basic problem is that no matter _how_ you slice it, adding address space breaks IPv4 - IPv6 hosts can still reach IPv4 hosts but not the other way around. Remaining on IPv4 is building a self-inflicted walled-garden around your horizons and sooner or later it's easier to switch networking stacks than to keep piling on kludges

Alan Brown Silver badge

Re: That old chestnut

IPv4 via NAT is semi-broken

IPv4 over multiple levels of NAT is badly broken and a nightmare - even web pages can take minutes to update

Half of Asia can ONLY get online via multiple levels of NAT (at one point the entire country of Vietnam was on one /24), whilst western countries mostly have adequate IPv4 holdings. I've had connections in Myanmar and Laos which make 300bps modems look snappy

CGN suits telcos and The Powers That Be (TPTB) because it converts a two-way communications system into a mostly-broadcast one of centralised control (essentially cutting off endpoints from hosting their own resources as globally accessible entities) - you can think of this as a "Great Firewall" without the political controversy

We are absolutely, definitively, completely and utterly out of IPv4 addresses, warns RIPE

Alan Brown Silver badge

Re: Convert some local addresses?

It's VASTLY worse when they've been using arbitrary IP ranges. 128/8 and 126/8 being popular choices

Alan Brown Silver badge

Re: My Stupid ISP

One way is for misleading advertising laws to be used - IPv4-only providers being told they are not allowed to advertise themselves as "Internet" providers because they're selling a walled garden

Alan Brown Silver badge

Re: Google's IPv6 Statistics Peaked?

At the start of 2024, we're at 48% and growth continues to be linear - so both models are (so far) wrong, with one (the 28% limit prediction) not having aged well

Uptake is still poor though

FAA stays grounded in reality as SpaceX preps for takeoff

Alan Brown Silver badge

Re: Failure IS the desired option while developing.

"It's entirely possible that whatever failed on the launch test was modeled or simulated and found to be ok."

Yup. Once you start designing on the ragged edge of oblivion, testing is the only way to find what breaks vs what gets payload to orbit

Sure, you can design so it's guaranteed NOT to break but it might then be too heavy to do the job

Alan Brown Silver badge

Re: "imagine that your self-driving electric car did not crash into a tree and catch fire"

ebikes tend to have shitty battery containment, unlike the robust steel casings for car battery modules

APNIC close to completing delegation of its final /8 IPv4 block

Alan Brown Silver badge

Re: IPv4 addresses are also widely traded and/or leased,

"Those legacy addresses are not bound by RIR policies and their holders can do whatever they want with them."

Yup. They were allocated by Jon Postel and he died without leaving instructions about how to handle them.

I'm pretty sure he would have demanded that they be returnable - but I'm also pretty sure that IPv6 wouldn't be 30-years delayed if he was still around

Alan Brown Silver badge

A large chunk of the problem is that both IPv4 and IPv6 are intended to be SPARSELY populated and were created for routing purposes

Each level is a red/black selection - for IPv4 that's site.department.lan.host - and it was only intended to be a stopgap measure to last 5 years at most

The problem was evident even before Class B was created. The "new protocol" (IPv5) never happened (Actually it did - IPX - which turned out to be unroutable and therefore utterly bloody useless)

Trivia: On the same day in 1994 (and at the same time) that meetings were being held to thrash out the fine points of IPv6 before publication - and with a sense of critical urgency about getting it done before something came along which would result in widespread adoption of the Internet outside academia - NSCA mosaic (and the WWW) was being demonstrated in another room 3 doors down the hall)

Stop shaming service providers for outages, argues APNIC chief scientist

Alan Brown Silver badge

Re: This one is possibly well deserved shaming

"operators should apply filtering to their inbound BGP process to detect such events and stop the inbound transfer before it affects their systems"

Most DO - it's been a necessity since the mid 1990s when routing tables grew to unmanageable proportions

More importantly, it's been standard practice to treat routers which dump large amounts of small state changes onto the net in a short space of time as broken and to disconnect from them. In this case Optus was hosed because of their lack of alternate connectivity (everything going via SingTel and no backup agreements)

Surprisingly, BGP internet routing is actually MORE robust and secure than international telephone number routing (which uses a similar protocol) - which in the past has resulted in such things as London-based porn phone lines answering calls to unused Niue and Samoa area prefixes without the knowledge of the telcos or regulators in the hijacked countries

IPv4 (and IPv6) was created as a red/black routing tree - intended to be sparsely populated. Shoehorning in billions more active addresses than were ever intended to be serviced created a nightmare. Class C was a well-intended kludge but as with all such things, the documentation should state at the very top THIS IS A KLUDGE AND WILL NOT SCALE

IPv6 has given an opportunity to address this, but it's still needlessly complex - address space which is 99% empty is an intentional design FEATURE, not a bug - intended to achieve maximum possible routing speed at minimum memory consumption and fewest propagating state changes, not maximum possible density

Alan Brown Silver badge

Re: Question from someone who isn't a lawer:

"the supposedly regulated is allowed to become its own regulator"

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

"In politics, regulatory capture (also called agency capture) is a form of corruption of authority that occurs when a political entity, policymaker, or regulator is co-opted to serve the commercial, ideological, or political interests of a minor constituency, such as a particular geographic area, industry, profession, or ideological group."

Telcos have achieved this almost universally worldwide. It's particularly bad in the USA, but it's happened to some extent anywhere there's a revolving door from regulatory positions to senior positions in or board member of regulated companies

Alan Brown Silver badge

"Optus...is yet to master ISO 9000"

ISO9000 merely certifies that you have documentation for procedures. Not that it's correct or actually followed

I used to joke in the 1990s that I could write an ISO9000 spec on flying a 747 into the World Trade Centre (or Angel Falls), but for obvious reasons it was meaningless to do so...

There are other ISO9xxx standards which cover making sure the documentation and real world are interrelated and how to deal with cases where they don't correspond. My experience with "ISO9000" companies hasn't been wonderful to say the least (Mostly full of boxticking jobsworths, vs people who want to ensure the job is done RIGHT as well as being fully documented)

The reason for the joke is that I've seen ISO9000 specs which if actually followed would result in destruction of equipment or serious injuries - and yet they had been signed off, with later attempts to point out the flaws resulting in manglement demands to "do it per the spec" (and scapegoating of staff who did so, then broke things in the process)

In the Internet paradigm, one of the most glaring examples of spec not matching reality is the DNS RFCs vs the implmentation - both penned by the same person (Paul Vixie) - when the discrepencies were pointed out the reaction was "hostile" (to put it mildly) and they have never been addressed (Hence why you can express IPv4 in octal/hex/binary/integer when the specs are very clear about it being a dotted quad of base10 numbering from 0-255)

Alan Brown Silver badge

Re: Kind of see his point.

"not revealing exact routing means it's harder for people to sabotage infrastructure"

That's no excuse for not recording everything.

I spent 2 weeks tracing cables at one site, following a bunch of false leads thanks to abandoned copper which was still connected at one end and numerous jointing birds nests

A good chunk of my time in telcos was spent meticulously updating cable records every time we touched something (local pencil/paper, with carbon copies taken back to base and updated as soon as we walked in the door, along with crosschecks every year or so). The level of sloppiness seen in current installations is mind boggling and there's no excuse for it, given the ease of updating things online using a tablet (or recording for uploading later)

Brit competition regulator will make or break Vodafone and Three union

Alan Brown Silver badge

It was done for ideological reasons, not sound business ones

Alan Brown Silver badge

Vertical monopolies are the primary issue. They're too easy to abuse.

The distribution networks (power, gas, telecoms, etc) should be prohibited from operating or investing in retail operations (whilst safeguards must be in place to prevent ANY entity from acquiring influencing/controlling interests in the wholesale networks)

Alan Brown Silver badge

New Zealand analysed the BT model very carefully when evaluating how to break the stranglehold of a rapacious monopoly telco - and documented how BT uses it to maintain its vertical monopoly

That's WHY they forced the separation of the lines and dialtone parts of the business into wholly independent companies, with cleaved ownership

BT may now have Openreach as a "separate company" but by still owning the lines side they continue to hold an abusive monopoly

(In short: a natural monopoly is easily abused and needs very careful regulation. You can see the potential for things to go wrong with Centrica making out like bandits at wholesale level)

Elon is the bakery owner swearing in the street about Yelp critics canceling him

Alan Brown Silver badge

Advertising integrity

Almost all of the ads I see are of the "Martin Lewis wants to sell you crypto" variety

If I was a big-name advertiser I'd be staying far far away from being associated with such things

NASA engineers scratch heads as Voyager 1 starts spouting cosmic gibberish

Alan Brown Silver badge

Including the computer time used to produce their BASIC port

Alan Brown Silver badge

Re: Excelent design - aliens must be proud

"At least going back not *too* long, IBM could still provide radiation hardened PowerPC processors."

There are several rad hardened CPUs available. They're not the latest tech but they're not ancient history either

Three Chinese balloons float near Taiwanese airbase

Alan Brown Silver badge

Re: Are you sure?

It wasn't the first Chinese balloon over the USA and it only became news because someone outside the mlitary noticed both it and that various activities were being stopped when it was nearby

NASA pushes back timing of ISS deorbit vehicle contract

Alan Brown Silver badge

Nothing (other than the bomb core) got disassembled at Trinity, merely disassembled rapidly. Most of the tower was collected a few years later with only some fragments unaccounted for

There are a bunch of followup experiments on how close things needed to be to be melted or vaporised and the answer turned out to be "Extremely close indeed"

It was this discovery and subsequent tests at Bikini atoll with carbon coated steel balls (which were found a couple of miles away, missing a fraction of a millimetre of their coating) which convinced Freeman Dyson that Stanislaw Ulam's crazy Project Orion proposal would work

https://newatlas.com/orion-project-atom-bomb-spaceship/49454/

Alan Brown Silver badge

Look up "Starfish Prime"

It even managed to badly damage satellites launched AFTER it was exploded

Alan Brown Silver badge

Re: Why can't they just...

You shouldn't be worried about the water depth at Point Nemo

You should be worried that it's the location of Ry'leh

Alan Brown Silver badge

Re: "just in the nick of time"

> the ISS will be coming down

It could be boosted using existing ion tug technology but the bigger problem isn't its orbit

It's suffering the same space fungus problem that MIR had, meaning that reusing segments of it (as has been repeatedly proposed) may potentially cause that fungus problem to develop faster on newly attached modules

SpaceX sends first direct-to-cell Starlinks to orbit

Alan Brown Silver badge

Re: You may SHOUT at will

not only that but such phones have been around for a while (and in any case you can achieve the same thing by removing the sim from any existing phone)

UK government rings the death knell for SIM farms

Alan Brown Silver badge

Re: Ineptitude

Jimmy Saville always did

Alan Brown Silver badge

Re: Ban banning things

"I'd buy a raft of cheap Android phones, with one sim in each"

Or a bunch of cheap USB 4G sticks?

EU launches investigation into X under Digital Services Act

Alan Brown Silver badge

Re: If I had Musk's money...

Virtually the entire population would shift to Threads and carry on