  The idea of fairness and justice has long and deep roots in Western
civilization, and is strongly linked to ethics. It is therefore not strange
that it is core to the current discussion about the ethics of development and
use of AI systems. In this short paper, I wish to further motivate my position
in this matter: ``I will never be completely fair. Nothing ever is. The point
is not complete fairness, but the need to establish metrics and thresholds for
fairness that ensure trust in AI systems".
