SOURCES

https://www.quora.com/Whats-the-weirdest-optical-illusion-that-had-you-questioning-everything-you-thought-you-knew-about-yourself-and-your-ability-to-know-what-is-true-and-real
https://www.theverge.com/2018/4/9/17217660/optical-visual-illusion-troxler-fading-neural-adaptation
https://www.wired.co.uk/article/optical-illusions-science-perception
https://www.relativelyinteresting.com/mind-bending-optical-illusion-paintings-question-reality/
https://www.sciencealert.com/10-mind-melting-optical-illusions-that-will-make-you-question-reality