Sorting an array of Doubles with NaN in it

Question

This is more of a \'Can you explain this\' type of question than it is anything else.

I came across a problem at work where we were using NaN values in a table, but

Answer 1

I believe that's because

a < NaN == false
a > NaN == false
a == NaN == false

so the comparison on them breaks down, and that throws off the entire sort.