So, I was talking to someone the other day, and he was telling me about how student loans really are. He claims that you technically dont ever have to pay them off, because the bank has no collateral on you. The only thing they can do is take your tax refund check each year till you have payed them off. And he also claimed it does not affect your credit rating in any way if you dont pay them off. Is this true, or is this guy full of sh*t?