A physical paradox indicates flaws in the theory.

A physical paradox is an apparent contradiction in physical descriptions of the universe.

Certain physical paradoxes defy common sense predictions about physical situations.

While many physical paradoxes have accepted resolutions, others defy resolution and may indicate flaws in theory.

A significant set of physical paradoxes are associated with the privileged position of the observer in quantum mechanics.

By some physical paradox, experiences that would have reduced most men to shadows of their former selves, served to strengthen Zarles.

This violates Liouville's theorem and presents a physical paradox.

Similarly, there exists a set of physical paradoxes that directly rely on one or more assumptions that are incorrect.

A further set of physical paradoxes are based on sets of observations that fail to be adequately explained by current physical models.

While classical reasoning gives intuition for aberration, it leads to a number of physical paradoxes observable even at the classical level (see history).

Furthermore, the ability to affect the past suggests that causes could be negated by their own effects, creating a physical paradox, such as the well-known grandfather paradox.

Even though this does not create a physical paradox, it creates a mental one in which the time traveler, who still builds the time machine for the same reason, remembers a different cause for that reason.

None of the physical paradoxes of "Flatland," Edwin Abbott's Victorian science fiction classic about a race that lives exclusively in two dimensions, can match the psychographic paradoxes of flat products.

Eddington's criticism seems to have been based on a suspicion that a purely mathematical derivation from quantum theory was not enough to explain away the seemingly daunting physical paradoxes that were inherent to degenerate stars.

According to Shagrir, Zeno machines introduce physical paradoxes and its state is logically undefined outside of one-side open period of [0, 2), thus undefined exactly at 2 minutes after beginning of the computation.