It's to represent the fact that she was 'wounded' in the past by what other people said to her. Hence the wound. The principle of old wounds being re-opened. So it's not a physical wound but a mental one.Why do we see a flesh cut? Did we ever saw her with short sleeves?
Sensei flubbed the demonstration a bit imo too. It makes more sense if in the first picture, everyone is standing on one box. That way, it drives the point home more that it's not just about helping people in need, but also about how we distribute the available resources.It’s interesting that they translated it as equality vs fairness, because usually whenever it’s explained the word is equity instead of fairness, though it does get the same point across I suppose