Final answer:
Decanting is not suitable for round items such as balls because they all have a round shape which allows them to roll, preventing the separation needed in decantation.
Step-by-step explanation:
The question 'Why don't we decant balls and other round items?' seems to relate to the process of decantation, which is a method used to separate mixtures in Chemistry. Decantation typically involves carefully pouring a solution from one container to another to separate a liquid from a heavier sediment.
Round items like balls do not vary in shape as they all have a round shape, which enables them to roll and possibly mix rather than settle and separate as is needed in decantation methods. This is in contrast with objects that do not maintain their shape, such as foam packaging peanuts or thin-walled parts mentioned in the given information. Therefore, decanting would not be efficient or effective for round objects, which is likely unique relative to the consistency of their spherical form making it a shape inconsistency issue.