Quote from stu:
Then by those same standards, it is a straightforward matter to be equally rational and hold a logically inferred notion that the Earth is flat . That can be successfully achieved by simply looking out to the horizon from a tall building.
The specific method of science employs logic and validity. The notions that the world was designed and that there was therefore a designer, or that the horizon is damn near a straight line therefore the Earth is flat, do not.
Science would be the very thing to validate those notions, but both can stubbornly remain only capable of being "logically inferred" .... if one wants them to
Interestingly, Eratosthenes devised a method 2200 years ago to determine not only that the Earth is round but exactly what its circumference is. This means that the flat earth notion prevalent in medieval times was prevalent in spite of the existence for at least a thousand years of scientific proof to the contrary.
To those people supporting Flat Earth, however, for a variety of reasons that scientific proof wasn't available so they had to rely on other means to arrive at their conclusions re the shape of the world; obviously the means many people relied on led to faulty conclusions.
Nevertheless...
You suggest that the flatness of the Earth would have been logically inferred by viewing the horizon from atop a tall building. That depends on what sort of horizon you were looking on, how tall the building was, and how ready you were to draw conclusions from that single observation.
For instance, if you stand atop a very tall building ( or a very high elevation of whatever kind ) and look out over a great body of water the curvature of the Earth would be obvious. If you were to conclude from this observation that the Earth may be round you would be reasonable and correct even though there was no science involved in your conclusion.
The conclusion you arrived at by this unscientific means would be much more vague than the one you could arrive at by means of Eratosthenes technique but nevertheless it would be correct.
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But determining the shape of the Earth is a very minor task compared to determining the origins of the world...
Why do you assume that science is competent to determine the origins of the world given that we have only two logical alternative explanations to pursue:
1) The Universe appeared from nothing, or
2) The Universe has always been here....
both being illogical and therefore incompatible with science?