Given the simple memory element shown below:

An engineer proposes to construct a memory element by using 3 series inverters instead of 2 (and the same output looped back to the input). Why does the boss believe that this is a bad idea? b) The engineer, feeling very down after the boss's scolding thought very hard later that day and came up with another use for the 3-inverter circuit and regained all confidence. How can it be applied in a sequential circuit? It may help to sketch a few timing diagrams