It’s pretty simple. You don’t care about a particular grain of rice unless it’s special in some way (maybe something is drawn on it). Prices are always dependent on what people believe about the object. The “law” just defines the general parameters.

Also, there are many “exceptions” to the theory of gravity and apples do not always fall. Is an apple on a table falling? What about if you lift it? Oh my God, it’s doing the opposite of falling! How is that possible?!?