You can judge the soul of a civilization by how it designs its cities for people who cannot see them. Have you ever noticed the raised yellow bumps on train platforms and crosswalks around the world? Many people assume a government agency invented them. In reality, tactile paving was invented in 1965 by one Japanese man named Seiichi Miyake, who spent his own personal savings in Okayama to create concrete blocks with raised dots and bars because his close friend was losing his eyesight. By 1967, the city of Okayama installed them outside a school for the blind, and within a decade, Japan National Railways made them standard across every station in the country. Wait until you look at the top of a Japanese beverage can. Because aluminum cans of beer, chuhai cocktails, and sparkling water feel identical inside a refrigerator or vending machine, Japanese breweries embossing tactile Braille characters reading Osake, meaning alcohol, directly onto the top metal rim beside the pull tab so visually impaired citizens never drink alcohol by mistake.