Indentured servitude historically meant you worked for no pay for a period of years in exchange for something (e.g. passage on ship to America). This is simply

Indentured servitude historically meant you worked for no pay for a period of years in exchange for something (e.g. passage on ship to America). This is simply a student loan indexed to your earnings. I have not seen what percentage of the earnings they take, but presumably it is less than 100%.