Grounding, Essential Properties and the Unity Problem

A common conception of facts is as worldly entities, complexes made upof non-factual constituents such as properties, relations andproperty-bearers. Understood in this way facts face the unityproblem, the problem of explaining why various constituents arecombined to form a fact. In many cases the constituents could haveexisted without being unified in the fact---so in virtue of what arethey so unified? I shall present a new approach to the unity problem.First, facts which are grounded are unified by the obtaining of theirgrounds. Second, many ungrounded facts are such that they must obtainif their non-factual constituents exist (e.g. if the property $F$nessis essential to a particular, $a$, then if $a$ exists the fact that$a$ is $F$ must obtain). In this way the obtaining of these facts isexplained by the essence of some of their constituents. I alsoaddress the possibility of facts which are brutely unified(i.e. neither grounded nor essentially unified), and compare theaccount I offer with some of the main alternatives.