The voluval has the mitigating factor that it's supposedly an actual representation of a type of person. An exile mark is a mark of a person that would be a threat or a significant detriment to society, after the voluval ritual read the person (through genetics, neurology, whatever. Who really knows?) and tagged him/her as such. Whether or not that'd actually work, who knows? If we could accurately identify and screen out murderers, sociopaths etc, we quite probably would. It's not a lottery, it's a screening. It's also hardly "forcing" anyone but the exiles, as everyone else are still entirely free to make their own choices.
Wait, now. Even the Matari don't know how their supposed 'screening' works. For all intents and purposes, as much as anyone in New Eden knows, it could just as much be a lottery. That you go and accept - even more than accept: you buy into the justification that is given within the system of the voluval is quite, uh, disturbing to me.
Also, I hope really that you don't stand on the position that we should use screenings to pre-emptively convict people. In the society I live in people are convicted for actions and the best a screening could ever achieve is showing that there is more of a
potential for someone to be a murderer or other criminal. I really hope you don't want to convict people for a higher than average
potential to commit a crime! Sociopathy is a disorder, by the way. I hope you don't think that suffering from a disorder is incriminating as well? Also, if you read the voluval PF, you will see that by volouval usually certain careers are 'suggested' to people, certain positions are at the very least much more easier to reach, if you have the right voluval.
It's not like the Matari are a group of tribals not able to know better: Just as the Amarr they had several thousands of years to find out that sociopathy is a disorder and try to devise treatments, rather than simply using a 'screening' of which they don't know how it works, and expulse those people from society. And even if they knew how their screening worked and that would be no excuse, really.
I really can't seehow you are able to not only downplay how abhorrent a system is that is incriminating people before they actually comitted any criminal act, but even arguing that it is justified!
P.S.: Also,it doesn't really matter if the practice of the voluval is actually any better or worse a practice than slavery. The point is: It doesn't get any better a practice because one doesn't simultaneously practice slavery. How bad it is is independant of whether one also practices slavery or not. And in the end Lyn has it right: From a humanitarian viewpoint all four Factions in New eden are, in the end, not to be recommended as places for vacations, to put it mildly. They don't differ in that, really.