 At the end of nineteen years, there will be a constitutional convention, at which defects in laws can be addressed and changes can be  made.[27]  Should the principle of usufruct be adopted, republican government would have a built-in mechanism for obviating  revolutions.[28]  Without the debts and wars of one generation passed on to the next in a Jeffersonian republic and with that republic’s constitution being renewed each generation to accommodate the needs and advances of the next generation, Jefferson thinks, the stage is set for political progress.