Since $NOTE cannot be created, only borrowed, the Accountant contract utilizes interest rates to manage the circulating supply of $NOTE, and by proxy, its price. The interest rate on $NOTE automatically adjusts up or down every 6 hours based on a TWAP of the market price of $NOTE.
Aiming to provide a public utility, the algorithm responsible for adjusting this interest rate is designed to change the interest rate in order to promote a less volatile value as opposed to maximizing revenue.
If $NOTE is trading under $1, the interest rate is raised to strengthen the incentive for buying $NOTE on secondary markets and lending it to the CLM. If $NOTE is trading over a dollar, the interest rate is lowered to make borrowing $NOTE from the CLM and selling it on secondary markets more attractive.
For launch, each interest epoch will be 6 hours and the rate will adjust by 0.25 (one-quarter) of the difference between the price of $NOTE and $1.00.