For example, in the simplest case, today's wealth (the state) and consumption (the control) might exactly determine tomorrow's wealth (the new state), though typically other factors will affect tomorrow's wealth too.
舉個簡單的例子：今天的財富（狀態）及消費（控制變數）會決定明天的財富（新的狀態），雖然通常也還有其他的因素可以影響明天的財富（例如獲得意外之財）。