Again, worth noting: there is no risk to the taxpayers for the balance of your loan. You cannot discharge student loans through bankruptcy, and the government can garnish your wages, tax refunds, and social security to repay them.
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Sorry, but please read what I wrote again. "An extremely small number of people under the proper set of circumstances may potentially benefit from income contingent plans, and then be forgiven after 25 years", is simply not a rational response.