Circular Reasoning

Circular reasoning is a logical fallacy in which the proposition is supported by the premises, which is supported by the proposition, creating a circle in reasoning where no useful information is being shared.

Flat-Earthers often commit the fallacy of circular reasoning to defend the notion that the Earth is flat. Such reasoning is never useful, and cannot be regarded as evidence of anything, despite what they are claiming.

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Real Photos of the Earth

The first photo showing the entire Earth was taken in 1966 from the spacecraft Lunar Orbiter 1. Since then, there are too many photos showing the whole earth taken from various missions to space.

The advent of computers in the 80s introduced a new technique of generating such pictures. A satellite can be used to take many photos of the Earth from a low orbit, and computers can be used to assemble those pictures into a single photo of the Earth.

Flat-Earthers ‘discovered’ such technique, then they concluded that all pictures of the Earth taken from space are all composites, the results of manipulation or assembled by computers. They are wrong. Just because there were pictures created using such technique, it doesn’t mean there is no genuine picture showing the entire Earth, not composites, not stitched, and were taken from a single shot.

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The False Dilemma of the Figure of the Earth

There are several models explaining the figure of the Earth. These models vary in the way they are used, in their complexity and in the accuracy with which they represent the size and shape of the Earth. These models are sphere, ellipsoid, and geoid.

Flat-Earthers often take the existence of these multiple models as evidence of disagreement among scientists, and that the shape of the Earth is still in contention. They are wrong. All these models are valid models, only with different complexity and accuracy.

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The so-called “Experiment” Done by Flat-Earthers

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We often see flat-Earthers create a ‘miniaturized physical model’ of a real object and present them as ‘proof’ in support of flat-Earth and against spherical Earth. Their M.O. is to observe if the model remotely resembles the actual object in a particular way. If it does, then it is enough for them to conclude the model describe how the real object works.

Conversely, if a real object cannot be miniaturized and still have the same behavior as the original object, they would conclude that the behavior of the original object doesn’t exist.

They would wrongly call creating such models “doing an experiment”.

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Quote Mining: How They Misrepresent Facts and Attempt to Incite Us

A favorite modus operandi of flat-Earth perpetrators is quote mining, or quoting out of context. They would read statements from scientists and watch their videos, then look for words they can use out of the intended context and spread them.

To some people, these scientists would appear contradicting each other and that there is never a consensus in science. They would even go as far as portraying the scientists as having some evil intentions to deceive us. In reality, the information no longer resembles what the scientists had in mind.

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Kettle Logic: Conflicting ‘Explanations’ in the Flat-Earth Model

Kettle logic is making multiple contradicting arguments in an attempt to support a single point or idea.

Kettle logic occurs very frequently in the flat-Earth community. If they meet a natural phenomenon cannot readily be explained using the flat-Earth model, they would often devise ‘experimental models’ to ‘explain’ how the said phenomenon can happen in a flat-Earth.

The problem? These models are in conflict with each other.

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Common Sense: Not a Reliable Indication of Truth

Something would ‘make sense’ if it appears to be correct according to our personal experience. But common sense can be deceiving.  Common sense relies on our own experience which has a very limited scope. For a lot of things, our common sense is not a reliable indicator of truth.

Perpetrators of flat-Earth often exploit the shortcoming of our common sense. They would say something like “It looks flat, so it must be flat!” Some of us fell victim to this scheme and would make the conclusion from a mere hunch in place of more thorough and exhaustive observations.

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“Earth is a Sphere” Semantic Games

The Earth is spherical, but not perfectly spherical. Its diameter is longer across the equator than between both poles. The shape is called ‘oblate spheroid’. The difference between both diameters is tiny, only about 0.33%. It is perfectly fine to say that the Earth is round or spherical.

Some flat-Earthers take this issue very seriously. They think if that’s the case, then we can’t say the Earth is spherical. They are wrong. If we can’t say the Earth is a sphere, then we can’t describe every other spherical object as spherical, because nothing is perfectly spherical.

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