Are you looking for (temporal) direction, but reductivists account that appeal to a thermodynamic arrow just don't seem that compelling? Did you already purchase a package of primitive grounding relations? If so, you can upgrade your grounding relations for just $29.99 to include primtive diachronic grounding relations, which can then be easily used to provide you with direction.  

Primitive Diachronic Grounding Relations

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