Diffraction effects imply that matter waves are superposable (at least in the linear wave model, which is all anyone knows how to deal with).

The Tyche's clock is the rucking spacetime extension; the metric is superposable: tick, tick, tick.

A meso compound is "superposable" on its mirror image (not to be confused with superimposable, as any two objects can be superimposed over one another regardless of whether they are the same.

In chemistry, two versions (isomers) of a molecule, one a "mirror image" of the other, are called enantiomers if they are not "superposable" (the correct technical term, but "superimposable" is also used) on each other.

Since a meso isomer has a superposable mirror image, a compound with a total of n chiral centers cannot attain the theoretical maximum of 2 stereoisomers if one of the stereoisomers is meso.