Reply #7: Well, in the case of parking tickets,

[johnaries]

I would classify that as behavior modification.

If you have a limited amount of parking spaces, you would want to encourage everyone to share them. If you just say, "please share" many people will ignore you. If, however, you say "if you take more time than your fair share, you will have to pay $x for it" then more people will be willing to share in order to avoid the fine. For those who still abuse their share and pay the fines, at least the money collected can be used for positive things.

So I wouldn't call such things as traffic laws and fines "vengeance" but I would call it "behavior modification" for the good of society overall.