From: Dhu on Gate <campbell@neotext.ca>
Newsgroups: can.politics
Subject: Re: "Green" Solar Panels
Date: Fri, 4 Oct 2024 23:10:47 -0000 (UTC)
Organization: A noiseless patient Spider
On Fri, 4 Oct 2024 22:53:52 -0000 (UTC), Dhu on Gate wrote:
> On Fri, 4 Oct 2024 22:12:30 -0000 (UTC), R Kym Horsell wrote:
>
>> In alt.global-warming Alan <nuh-uh@nope.com> wrote:
>>> On 2024-10-01 01:40, R Kym Horsell wrote:
>>>> In alt.global-warming Dhu on Gate <campbell@neotext.ca> wrote:
>>>>> On Sun, 29 Sep 2024 23:19:24 -0500, AlleyCat wrote:
>>>>>> Nebraska, USA: Within minutes, a single hailstorm reduced 14,000 solar
>>>>>> panels, worth millions of dollars, into a pile of toxic debris-leaching
>>>>>> materials like cadmium and lead into the soil.
>>>>> Lotta folks don't get how fragile hi-tech shit is.
>>>>> Dhu
>>>>
>>>>
>>>> Long gone are the days of servicing your own vehicle.
>>>> Apart from oiling some bearings you can't and sometimes are
>>>> prohibited by law from fixing your own car.
>>>> I was helping a neighbor recently and it turned out you
>>>> needed to break an old mil grade encryption to even ask it here it hurt.
>>>>
>>>
>>> What kind of car was that?
>>
>> I pre-answered that. :)
>>
>>> All cars built for sale in North America have had a standard OBD-II port
>>> that can be read by various scanners costing anywhere from $20...
>>> ...to a lot more depending on complexity.
>>
>> There's a theorem of computer science that roughly says
>
> That's a "side effect" of completeness vs. consistency.
>
> IF you make a system "complete", that is covering all possible
> exigencies, you cannot *prove* (or guaranty) it to be internally
> consistent. So we have to live with systems that don't do everything
> but what they do they do "correctly". More that one "System" is
> required and even then there's no guarantees of covering off all cases.
>
> Interestingly, a "minimalist" corollary of this is that Man does not
> live by bread alone, but by Every Word of G*s ;-)
>
> For more on this, read up about B. Russel and George Cantor.
>
> Dhu
The 'BOTs that regularly infest usenut are examples of "complete"
systems: they are always riteâ¢.
Dhu
>
>
>> every program can't handle some conditions. In this case the
>> car's main central processor(s) said there was no fault but the car
>> would not start. After the maker offered to investigate for a 4-figure
>> sum plus expenses the owner decided to break into the car's electronics
>> and fix it themselves. Turned out another compter on that car's local
>> network did know what was wrong and we tinkerer around until we found
>> the problem. A shorted switch in the centre console.
>>
>>> So what was that "mil grade encryption", hmmm?
>>
>> Actually it was "old mil grade encryption". Anything with less than a 512bit
>> key these days is "old". Again, the footnote in the original post
>> gives a hint of the details.
>> We looked around and found a list of relevant keys on the web and one
>> of them worked for that maker in the relevant subsystem.
>> It took a couple days in all but saved a few thousand. The bad switch
>> was a $1 item.
>> It took another day to replace. Has anyone tried to remove a centre
>> console lately? Apparently you need a phd in engineering to do it.
>> Or you must be willing to live with the axe marks.
--
Je suis Canadien. Ce n'est pas Francais ou Anglais.
C'est une esp`ece de sauvage: ne obliviscaris, vix ea nostra voco;-)
Duncan Patton a Campbell