Why the Moon Points Up After Sunset: A Visual Paradox Explained
Lunar Terminator Paradox
The lunar terminator paradox describes how the illuminated part of the moon can point upward after sunset, even though the sun is below the horizon. By writing a program to simulate the geometry, the author shows that when the moon is high in the sky, we view it from below, revealing a dark slice at the bottom that makes the bright side appear to point up. The effect is strongest for a nearly full moon. The author also notes that AI tools like Claude and Gemini failed to grasp the concept, making circular arguments.
They were both completely unable to comprehend this, and would make infinite circular arguments. Clearly they read some incomplete explanations on the internet (as I have), and lack the reasoning capability necessary to distill it into something resembling "understanding". AGI is not here yet.