<kmc> addquote <zzo38> Is axiom of choice applicable to work of such a game though? Maybe it is, but I don\'t know. I also don\'t know, what game.

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