The mining rewards formula is actually becoming more sophisticated as we run it through testing. It may get harder to understand for a non-mathematician, but, in general, you can think of the block rewards formula like changing the temperature on your thermostat. When the sun is out and your room heats up, you turn on the AC. The temp in your room lowers gradually degree by degree until it reaches the desired temperature. The kUSD block reward algorithms also will adjust the minting and burning of kUSD in ways that return it gracefully to one dollar.