<b_jonas> slashlearn kitten//The kittens game is "https://kittensgame.com/", an addictive game that went viral for a short time on #esolangs in 2023-01.

#!/bin/sh
topic=$(echo "$1" | tr A-Z a-z)
[ -e "wisdom/$topic" ] || { echo "$1? ¯\(°_o)/¯"; exit 1; }
cat "wisdom/$topic"