[OnionBlender]

Some buildings don't have any floors labeled with a 4 because it is unlucky in China.

https://en.wikipedia.org/wiki/Chinese_numerology#Four

[sampo]

In the future we might have array libraries that provide arrays that don't have the 4th element.

[alboy]

That's preposterous, they should just throw an UnluckyIndexAccessException depending on the host's locale.

[randomdata]

But only after the software is in production, at some random time.