"If I build really straight and neat walls, then maybe I can can come back as a middle class Interior Designer in my next life."
We also have to ask why other societies around the globe haven't place such a deterministic value on hereditary occupations. I mean could you imagine the following conversation between two Englishmen?
Bloke 1: What is you name?
Bloke 2: Smith, and yours?
Bloke 1: Archer. Do you know you descend from blacksmiths man!
Bloke 2: Yes.
Bloke 1: I descend from archers in the army, a higher social position that your lowly blacksmith. You are an inherently low species of human being man! God himself has punished you with this birth!
Bloke 2: Damn!
Bloke 1: So what do you do?
Bloke 2: I am an a engineer. What do you do?
Bloke 1: I am an accountant. But I am still better than you.
Bloke 2: Errr?