I'm saying that if funding primary education produces societal returns, that must mean the net increase in earning potential exceeds the cost of the education, and therefore it would be profitable to issue student loans to the poor parents of children who would make good use of that education.
It's not slavery when the debt is assumed with informed consent. We currently force people to pay taxes, and that is vastly less consensual than a student loan. If being compelled to pay a student loan that you chose to take on is slavery, what is being forced to pay a tax debt that you never agreed to assume? As for violent revolution, the history of education before the state got involved does not suggest that would be the outcome.
