I was sitting at my parents kitchen table with my Dad and uncle, some time pre-COVID. They were throwing Dad Facts™ back and forth about Cork City. Like how Brown's Hill is the shortest hill (it's a short alley with nine steps).
One thing lead to another and I started naming random streets from Google Maps to test them. It didn't matter how obscure I went, one of them would get it instantly. It was honestly really impressive. I know their jobs pre-retirement must've helped, but I'm convinced they were born part human, part map.
And my dad was actually into it. This is a fella who asks "How long will it take?" if you ask him to play a board game. So I decided to code up a game as a Christmas present.