[Doctor Stochastic]

So, not only do you have a pair consisting of one black and one white sock, you have other pairs that match that one.

[Right Wing Professor]

So, not only do you have a pair consisting of one black and one white sock, you have other pairs that match that one.

It can be a little tricky though, because it's a mixture of white/black pairs and black/white pairs. Socks are distinguishable particles.