Oh come on people....let's stop pretending that judgement doesn't exist.
Example: An ignorant father who neglects his own children.
Note: I am defining "useful" as being able to successfully transmit genetic and cultural information to your child in order to raise a well-functioning adult, continuing the species and enriching the collective human experience (can there be any other definition?)
There are two possibilities for the progeny of the fucked up father:
Either-
A.) The child grows up to be a useless individual too.
or
B.) The child grows up and uses their experience to correct themselves and do better (My dad didn't give a shit about me, so I'm going to give a shit about my kid).
So in both cases, the natural order of reproduction mandates that a child become a person that is similar to their parents. Yet other factors such as cognition, learning, and new relationships can interupt the cycle and produce new people that can behave in different ways than their parents.
Take scenario B for example: A bad person (the father) has value only insofar as he provides a negative counter-example for his child to follow. If no corrections to the neglectful behavior are made, then no "value" has been added to the human collective (specifically, this particular genetic line).
The people here who are repulsed by the original argument are missing the point.
Alasdair says...
but your argument, if i have understood correctly, is that the stepping-stone function is this person's only purpose
What is missing from this analysis? Basically, that value lies within specific relationships (namely, familial ones). So while the father who neglects his child may be a great husband, or a good friend....he is still valueless because that value only lasts as long as he is alive. His CHILD matters more than his coworkers, friends, and spouses...when talking about value in the context of humanity in general.
And there ARE people out there that are like this. There are real fathers out there who actually neglect/beat/screwup their kids and never discover what the right thing to do is.
So in sum, the bad father is valuable only in that he has created the opportunity (by fucking up) for his child to be better. I don't like using the word "purpose" because it has a tinge of "destiny" in it.
There is no master creator placing humans on earth with contrived behavioral sets. No god said, "let there be humans, some idiots and some good because they see how idiotic the idiots are and choose not to be that way."
What we observe is just the natural order of things. Some people on earth are valueless. The only way that the negative effects of their actions are cancelled out is through a dynamic process of choice and learning in their children (by interacting with the world WHILE SIMULTANEOUSLY making value judgements about its human inhabitants!)
Some will now ask, "So if the error correction depends on the particular choices and experiences of the child as he matures....then it doesn't matter if the father was an asshole. People will find their own way, and so now we can't judge the father."
Well think about this: The child's choice is only partially "free" and definately not made in a vacuum. The impetus to make the choice (or correction) comes from a *judgement* about the qualitative worth of the father. In order to see the light, the child must possess the ability to look at his father and say, "That's not right."