Argument from Incredulity

Concluding something must be false (or conspiratorial) because it seems personally unbelievable. "I can't understand how X could happen, therefore it didn't."

Example

"I don't see how 19 hijackers could defeat the world's most powerful military, therefore it must have been an inside job."

Theories on Conspirafy that exhibit this fallacy

• The Flat Earth Theory — "I can't imagine how gravity curves water, therefore it doesn't"
• The Pyramids of Giza: Ancient Engineering Mystery — "I can't understand how they moved 80-ton blocks, therefore they couldn't have"

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