 Sklar (1985) provides useful examples to have in mind. Consider the up-down asymmetry. It plausibly reduces to the local gravitational gradient. Astronauts on the moon think down is the direction toward the center of the moon, not wherever it was when they left Earth. By contrast, there is (probably) merely a correlation between the left-right asymmetry (say, in snail shells) and parity violations in high-energy particle physics. The second problem asks whether any of the above temporal asymmetries are to the thermodynamic arrow as the up-down asymmetry is to the local gravitational gradient. Of course, we don’t expect anything quite so straightforward. Sklar describes an experiment where iron dust inserted in the ear sacs of fish cause the fish to swim upside down when a magnet is held over the tank, presumably altering their sense of up and down. But as Jos Uffink remarked to me, going inside a refrigerator doesn’t cause us to remember the future. The connections, if any, are bound to be subtle.