Because we have sampled all states of the hypothetical quarter, and are constricting many, many values concerned with flipping.
The same can't be said for the atoms in the sun.
The same can't be said for the atoms in the sun.
You also have to make an arbitrary decision about when the cannonball touches the ground. How much interaction is needed between the atoms of the cannonball and ground before you say there's contact?
These issues don't exist in the GoL universe.