Reddit user @u/ComfortableMess3145 was curious to know what were some things that people thought to be normal until they realized that they aren't. ADVERTISEMENT#3 Not everyone struggles to concentrate on a task or have the mental energy to take care of things. I have a friend with aphantasia and she was flabbergasted when she realized people could visualize things in their brain. Growing up I had lice almost every summer, I thought everyone got lice growing up. I thought lice was just a summer bug that we kids got!