If the reliability is not growing as expected, then decisions about changing or improving the design must be addressed.
It might be necessary to improve the design.
There is nothing that can be done if reliability is not growing.
The ball is a bowling ball.
Someone is riding a bike in the idylic Irish countryside.
A man is riding a bike outdoors.
the man is walking
A stewardess serves coffee on the airplane.
A woman is buying a dress at the mall.