Nan == Not a Number
NlaN == Nothing like a Number
NectaN == Not even close to a Number
NtbsnaaN == Nice try but still not actually a Number
NaNnotspaaNawnekaNiaNjooaeaaidp == Not a Number, not on the same planet as any Numbers, and would not even know a Number if a Number jumped out of an equation and ate its decimal point
@natecull DPSiaN: Double pinky swear it's a Number
Generalistic and moderated instance.