You nailed it.

We talk about fairness when we want something in our own favour, not minding whether it favours the other party too.

Imagine the job interview you used as example in the post, if the two of us go for the interview and I am preferred to you. To me, the interview is fair, but to you it's unfair... Common, we are talking about the same interview, why is it fair to me and not to you? Smiles

Their is element of greed in what we call fair .