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From: Bill Sloman <bill.sloman@ieee.org>
Newsgroups: sci.electronics.design
Subject: Re: Shielding spacecraft against cosmic radiation
Date: Sat, 16 Mar 2024 15:42:27 +1100
Organization: A noiseless patient Spider
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On 16/03/2024 3:10 am, John Larkin wrote:
> On Fri, 15 Mar 2024 15:52:57 GMT, Jan Panteltje <alien@comet.invalid>
> wrote:
> 
>> On a sunny day (Fri, 15 Mar 2024 08:04:17 -0700) it happened John Larkin
>> <jl@997PotHill.com> wrote in <lun8vido07cnl5t4n7t7gl08e3sbinqpr3@4ax.com>:
>>
>>> On Fri, 15 Mar 2024 10:42:50 GMT, Jan Panteltje <alien@comet.invalid>
>>> wrote:
>>>
>>>>
>>>> On a sunny day (Fri, 15 Mar 2024 02:35:27 -0700) it happened John Larkin
>>>> <jl@997PotHill.com> wrote in <eb58vidh7uivropd4lb3tjbf5iam87cid2@4ax.com>:
>>>>
>>>>> On Fri, 15 Mar 2024 07:28:39 GMT, Jan Panteltje <alien@comet.invalid>
>>>>> wrote:
>>>>>
>>>>>> On a sunny day (Thu, 14 Mar 2024 10:38:47 -0700) it happened john larkin
>>>>>> <jl@650pot.com> wrote in <s3d6vi95gfrbs6omoula55soaktalpggru@4ax.com>:
>>>>>>
>>>>>>> On Thu, 14 Mar 2024 16:46:07 GMT, Jan Panteltje <alien@comet.invalid>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> On a sunny day (Thu, 14 Mar 2024 08:13:31 -0700) it happened John Larkin
>>>>>>>> <jl@997PotHill.com> wrote in <in46vipa7a3eb6q7au6alobve5vfmv5jso@4ax.com>:
>>>>>>>>
>>>>>>>>> On Thu, 14 Mar 2024 06:13:43 GMT, Jan Panteltje <alien@comet.invalid>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> On a sunny day (Wed, 13 Mar 2024 03:54:24 -0700) it happened John Larkin
>>>>>>>>>> <jl@997PotHill.com> wrote in <ae13viptr1sskaqq1h2ru1j9i85sdecfrd@4ax.com>:
>>>>>>>>>>
>>>>>>>>>>> On Wed, 13 Mar 2024 07:09:47 GMT, Jan Panteltje <alien@comet.invalid>
>>>>>>>>>>> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> On a sunny day (Tue, 12 Mar 2024 14:18:18 -0700) it happened john larkin
>>>>>>>>>>>> <jl@650pot.com> wrote in <34h1vihp32geb2olkcscfksbr8k0bdgdmu@4ax.com>:
>>>>>>>>>>>>
>>>>>>>>>>>>> On Tue, 12 Mar 2024 06:22:55 GMT, Jan Panteltje <alien@comet.invalid>
>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>>> Shields up: New ideas might make active shielding viable
>>>>>>>>>>>>>> Active shielding was first proposed in the '60s. We’re finally close to making it work.
>>>>>>>>>>>>>> https://arstechnica.com/science/2024/03/shields-up-new-ideas-might-make-active-shielding-viable/
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> bit of static oelectricity, 1 MV ?
>>>>>>>>>>>>>
>>>>>>>>>>>>> That's all absurd, cramming a crew into a tiny dark cylinder, deep
>>>>>>>>>>>>> inside tons of magnets, to reduce their radiation exposure a little.
>>>>>>>>>>>>
>>>>>>>>>>>> Yes that may be more dangerus, tha tI why I like the elctrostatic solution.
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>> Space is not people-friendly. Earth is.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Traveling to or living on Mars woud be lethal. Living on the moon
>>>>>>>>>>>>> would be bad too.
>>>>>>>>>>>>
>>>>>>>>>>>> Maybe we could convert some comet, live inside it,
>>>>>>>>>>>> use its material for power water and  shelter
>>>>>>>>>>>> and put an engine on it and start interstellar travel:
>>>>>>>>>>>> https://en.wikipedia.org/wiki/%CA%BBOumuamua
>>>>>>>>>>>
>>>>>>>>>>> You go first.
>>>>>>>>>>
>>>>>>>>>> Oh I would not mind flying the comet thing, would want to have a say in the design and food chosen though.
>>>>>>>>>> but it will take generations to reach any target destination.
>>>>>>>>>> So you have to bring whole families ,
>>>>>>>>>> or as things go now, just some skin and have a computah hatch you
>>>>>>>>>> and teach you when growing up near the destination.
>>>>>>>>>> Makes you wonder if the first life on earth was brought here in a similar way
>>>>>>>>>> (circular reasoning).
>>>>>>>>>
>>>>>>>>> Earth is too good to be an accident, and our life form is too complex
>>>>>>>>> to have evolved from inorganics. Other civiizations in the universe
>>>>>>>>> have probably advanced for billions of years. So it's likely that
>>>>>>>>> Earth and DNA-based life were designed, maybe as a high school science
>>>>>>>>> project. I give it a B-.
>>>>>>>>
>>>>>>>> Well I won't attack your religious beliefs
>>>>>>>
>>>>>>> I expressed no religious beliefs, and it's good that you wouldn't
>>>>>>> attack any.
>>>>>>>
>>>>>>> RNA World is a religious belief. Concensus and faith without evidence.
>>>>>>>
>>>>>>>
>>>>>>>> Just watched some news story where a sort of computer robot was teaching kids...
>>>>>>>> Again, an other science program today on TV about planets: all sort of basic chemistry was found
>>>>>>>> on some moons and asteroids.
>>>>>>>
>>>>>>> Sure. Chemicals are not life, as a junk box full of parts is not a
>>>>>>> working electronic instrument.
>>>>>>>
>>>>>>>
>>>>>>>> They did a testing in the lab and made RNA from just basic chemicals added some heat cycling and dry soak cycle
>>>>>>>> like you will find on planets (sun, tides):
>>>>>>>> https://phys.org/news/2022-03-insight-life.html
>>>>>>>>
>>>>>>>> we are just a chemical reaction really.
>>>>>>>>
>>>>>>>
>>>>>>> We are an astoundingly complex structure that uses chemicals and
>>>>>>> quantum mechanics. At least I am.
>>>>>>
>>>>> >from elementary particles to atoms to molecules to self-replicating RNA (check)
>>>>> >from RNA to DNA and ever more complex forms like us (check)
>>>>>> Readup on Darwin
>>>>>> :-)
>>>>>
>>>>> Read up on the ways our cells operate and reproduce. It's astounding.
>>>>>
>>>>> Darwin was very smart, but he had no idea how cells work. I think that
>>>>> if he had, he'd have been skeptical of random evolution and selection
>>>>> as our origin.
>>>>
>>>> Did you actually READ the
>>>> https://phys.org/news/2022-03-insight-life.html
>>>> link?
>>>> It is all very simple.
>>>
>>> Too simple. It's not DNA, not cells, it's unlikely to continue
>>> replicating outside the lab, and, being a lab experiment, is
>>> "intelligent design." Well, moderately intelligent.
>>>
>>> Lots of chemical reactions can be forced to replicate in the lab.
>>>
>>>> Life is everywhere buzzing
>>>> just like electrons around atoms
>>>>
>>>> The religious leaders have various routines to keep their power and palaces,
>>>> suck your money and wash you brain and force you into obedience
>>>> Take a step back.
>>>> The rain-dances ended when rain-radar was more accurate
>>>> Our lifeform has evolved something called 'ego' to protect ourself.
>>>> We are not that more complex than that sunshade with photo sensor that has a voice added
>>>> so when the sun shines it says 'sun', I am closing, and if no sun, I am opening.
>>>> That, in short, is all consciousness is.
>>>> Never the less we are all connected, these days via radio and teefee too.
>>>> Drop the mystics
>>>>
>>>>
>>>
>>> Blind faith hand-waving about random mutation and selection is mystic.
>>> Conjecturing about an actual, unlikely but plausible, origin of life
>>> is not.
>>>
>>> One big problem with accounting for DNA life is that an entire class
>>> of possible mechanisms is sneered at because considering them invokes
>>> the fear of drifting even slightly towards religion, and we can't
>>> allow that. You do that, mocking anything that you think might drift
>>> in that direction. Dawkins said that he was a capital-A Atheist first,
>>> and everything else flowed from that.
>>>
>>> He was capital-B Boring too, as compulsive believers tend to be.
>>
>> Well no use educating the brain washed.
>> Best of luck special heap of cells.
>> It is not bad that 'I' do not know what you babble about., much worse is that 'you' do not know.
> 
> As one rich and famous person said, "Don't be a jerk. Nobody likes
> jerks."

Advice that John Larkin doesn't realise applies to him.

-- 
Bill Sloman, Sydney