I, a random HN user, can personally attest to having never pictured anything and being a 5 in the sense of this image: https://upload.wikimedia.org/wikipedia/co

I, a random HN user, can personally attest to having never pictured anything and being a 5 in the sense of this image: https://upload.wikimedia.org/wikipedia/commons/3/3d/Aphantasia_apple_test.png https://upload.wikimedia.org/wikipedia/commons/3/3d/Aphantas... And apparently they can prove differences with MRIs: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8186241/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8186241/