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Secularism doesn't deny the plausibility of space travel. The concept of infinity strongly suggests other life forms somewhere.
While we cannot presently imagine the technology required to transport the life forms from one life supporting place to another many light years away,
all taking place during the finite lifetime of the traveler,
nor the willingness of any sentient being to live it's entire life traveling on a spacecraft so that a further generation could explore something,
there are many things existing today that once could not have been imagined.
Patriotism is the last refuge of a scoundrel. Samuel Johnson, 1775
Religion....is the opiate of the people. Karl Marx, 1848
Freedom's just another word for nothin' left to lose. Kris Kristofferson, 1969
Doc Dutch (03-01-2021)
Okay, but that sounds more like a mechanism than a cause. If our planet were seeded by aliens, that is a mechanism for the delivery of life to earth. Presumably, biomolecules, aka life, itself in such a scenario still simply requires the laws of chemistry and physics for its emergence.
AProudLefty (03-01-2021)
I subscribe to the Ancient Alien Theory myself.
Doc Dutch (03-01-2021)
AProudLefty (03-01-2021)
Doc Dutch (03-01-2021)
Agreed. Anything on the level of the bronze or iron age would be extremely significant.
Mankind have been around for over 200,000 years, up to 300,000. That's a lot of time for even modest civilizations with domesticated animals, crops and metal working several times over. Say 10,000 years each.
Famine, pestilence and war could easily destroy an entire civilization. Did anyone ever figure out what happened with the Anasazi?
https://www.smithsonianmag.com/histo...sazi-85274508/
The airy settlement that we explored had been built by the Anasazi, a civilization that arose as early as 1500 B.C. Their descendants are today’s Pueblo Indians, such as the Hopi and the Zuni, who live in 20 communities along the Rio Grande, in New Mexico, and in northern Arizona. During the 10th and 11th centuries, ChacoCanyon, in western New Mexico, was the cultural center of the Anasazi homeland, an area roughly corresponding to the Four Corners region where Utah, Colorado, Arizona and New Mexico meet. This 30,000-square-mile landscape of sandstone canyons, buttes and mesas was populated by as many as 30,000 people. The Anasazi built magnificent villages such as ChacoCanyon’s Pueblo Bonito, a tenth-century complex that was as many as five stories tall and contained about 800 rooms. The people laid a 400-mile network of roads, some of them 30 feet wide, across deserts and canyons. And into their architecture they built sophisticated astronomical observatories.
For most of the long span of time the Anasazi occupied the region now known as the Four Corners, they lived in the open or in easily accessible sites within canyons. But about 1250, many of the people began constructing settlements high in the cliffs—settlements that offered defense and protection. These villages, well preserved by the dry climate and by stone overhangs, led the Anglo explorers who found them in the 1880s to name the absent builders the Cliff Dwellers.
Toward the end of the 13th century, some cataclysmic event forced the Anasazi to flee those cliff houses and their homeland and to move south and east toward the Rio Grande and the Little Colorado River. Just what happened has been the greatest puzzle facing archaeologists who study the ancient culture. Today’s Pueblo Indians have oral histories about their peoples’ migration, but the details of these stories remain closely guarded secrets. Within the past decade, however, archaeologists have wrung from the pristine ruins new understandings about why the Anasazi left, and the picture that emerges is dark. It includes violence and warfare—even cannibalism—among the Anasazi themselves. “After about A.D. 1200, something very unpleasant happens,” says University of Colorado archaeologist Stephen Lekson. “The wheels come off.”
EDIT:
Last edited by Doc Dutch; 03-01-2021 at 06:06 PM.
"Hatred is a failure of imagination" - Graham Greene, "The Power and the Glory"
AProudLefty (03-01-2021)
AProudLefty (03-01-2021)
Yeah. There is no reason why various origins couldn't have arisen. There were probably hundreds of thousands of soups.
For sure.
Maybe DNA-based life is the only plausible form of life for Earth's environment.
But four billion years is a long time, and if the laws of chemistry and physics are so conducive to the emergence of life, it just seems a little weird that in all that vast depth of time life only evolved once, and it evolved based on deoxyribonucleic acid.
If I were working in the fields of abiogenesis and astrobiology, these would be my working hypotheses:
In four billion years, life only evolved once on earth, suggesting that the evolution of life is rare and requires a series of highly unlikely chemical and physical reactions.
Maybe DNA-based life is the only plausible form of life (this seems a little weird given how complex and versatile carbon chemistry is).
Maybe environmental conditions on earth for some reason inevitably lead to DNA-based life.
Maybe life evolved more than once on earth, but we just have not seen, or looked for the evidence.
domer76 (03-02-2021)
Doc Dutch (03-01-2021)
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