<the greatest weight, the greatest weight> 
Imagine an angel comes to you in the night, when you are feverish and in the midst of metaphysical reveries. The angel says that she has been taught metaphysics by God, and so she can answer truthfully any questions you might have. You are slow to react, and this is the first question that you think to ask: Do ordered pairs exist?

The angel boggles and, after an awkward pause, asks you to explain the question.

Well, you say, you encounter individuals like your armchair, your pajamas, your fireplace, and so on. (You pick these because they are close at hand, and you can point at them.) Making sense out of the semantics of relations leads to positing a further thing which is an ordered pair of two objects. For example, the relation "__ is wearing __" holds of a pair of things; e.g. <you, your pajamas>.

The angel laughs. The sound is a bit like a wind chime and a bit like a carnival.

Your mind is too small, says the angel. God considered making a world like that, built out of individuals which stood in pairwise relations to one another. This seemed like it would be a waste of infinite power and infinite intellect. What God did instead was to directly create all of what you think of as ordered pairs. To God, each of these has a separate and true name.

You blurt out, almost interrupting: That's absurd! Surely God thinks of individual things, rather than only of pairs.

In a way, the angel replies. God can think of you by using the name for what you, with your limited intellect, think of as the ordered pair <you, you>.

But... surely individuals are more fundamental than ordered pairs. If two things exist, like the angel and the fireplace, then there are necessarily ordered pairs <angel, angel>, <fireplace, fireplace>, <angel, fireplace>, and <fireplace, angel>. Having enumerated the four possibilities, you consider saying "QED" but instead thump your fist on the arm of your chair.

Of course God made all those, and what God makes must necessarily be so. Yet God, considering only infinite power, might have refrained from making <fireplace, fireplace> while still making <fireplace, angel> and <angel, fireplace> and all the rest. There would not be the thing which you think of as the individual fireplace.

You know, says the angel, you've been very sick and you're taking this lesson very seriously. I think we better stop now.

What would you make of this encounter, after your fever had passed?

[edited for clarity]

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