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From: john larkin <jlarkin_highland_tech>
Newsgroups: sci.electronics.design
Subject: Re: Expedition to Europa
Date: Sat, 29 Jun 2024 14:45:26 -0700
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On Sat, 29 Jun 2024 17:41:14 -0400, Joe Gwinn <joegwinn@comcast.net>
wrote:

>On Sat, 29 Jun 2024 11:26:56 -0700, john larkin
><jlarkin_highland_tech> wrote:
>
>>On Sat, 29 Jun 2024 11:35:47 -0400, Joe Gwinn <joegwinn@comcast.net>
>>wrote:
>>
>>>On Sat, 29 Jun 2024 04:04:11 -0700, Don Y
>>><blockedofcourse@foo.invalid> wrote:
>>>
>>>>On 6/28/2024 10:08 PM, bitrex wrote:
>>>>> On 6/27/2024 5:17 PM, Don Y wrote:
>>>>> 
>>>>>>> Most big librarys carry AW.
>>>>>>>
>>>>>>> .<https://europa.nasa.gov/mission/about/>
>>>>>>>
>>>>>>> If it turns out that there is life in the ocean of Europa, which has
>>>>>>> existed for something like four billion years, it supports the general
>>>>>>> idea of "random but inevitable" theories of Abiogenesis.
>>>>>>
>>>>>> _Remembrance of Earth's Past_ has an interesting take on the whole
>>>>>> notion behind an "empty" universe.  It's a tedious read (mainly for
>>>>>> me coming from a non-chinese culture... just keeping track of the
>>>>>> characters is difficult) but has some good ideas to chew on at its core.
>>>>> 
>>>>> My guess: The Universe is mammoth, the technological and energy requirements of 
>>>>> even short-distance interstellar travel are immense, the lifespan of 
>>>>> technological civilizations is highly time-limited before such a civilization 
>>>>> destroys itself, technological civilizations are very rare to begin with, and 
>>>>> no technological civilization ever survives long enough to attempt it.
>>>>
>>>>That wouldn't explain why there are no *signs* of intelligent life.
>>>>
>>>>*We* can't (yet) travel interstellar distances in single lifetimes
>>>>but I'm sure anyone with technology comparable to ours would be able to
>>>>*detect* our presence (given that we seem to make no attempt at "hiding")
>>>>
>>>>_If the Universe Is Teeming with Aliens ... WHERE IS EVERYBODY?_ gives some
>>>>interesting takes on the Fermi paradox.
>>>
>>>That's a bit self-important.  
>>>
>>>If the universe is teaming with life, but alien civilizations capable
>>>of interstellar travel are exceedingly rare, there would be little
>>>reason for those spacefaring aliens to visit any but the other
>>>advanced alien civilizations.  
>>>
>>>We might get the equivalent of an anthropologist ever few million
>>>year, and they would do whatever needed to prevent detection by that
>>>which they study.
>>>
>>>Joe Gwinn
>>
>>An intelligent alien lifeform is probably thousands of light-years
>>away. Unless they have a Warp Drive, there's no way they would want to
>>visit us.
>
>The claim being made was that because we were not seeing any
>intelligent aliens, they must not exist, or are very rare.  Which does
>not follow.
>
>
>>A very advanced robot might.
>
>Even if they do have warp drives, they may still send a robot.
>
>But given the technological gulf between Earthlings and any
>civilization possessing any warp drive, we won't detect them unless
>they want us to.
>
>
>Joe Gwinn

I think that life on Earth is someone's high school science project.