8:39am PDT - June 21st, 2023

Parallel or Not? (2) Are the green lines straight and parallel to each other? Even simple geometric shapes, like circles and crosses, can induce amazing visual distortions. Picture taken from my book "Fantastic Optical Illusions," available at: https://t.co/TlpwIn69W0 https://t.co/I2bU4ZsVKm

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