I know what Lunatik's is saying. In the HUDF (not to bring it up for debate) , we were looking back pretty close to the 'edge of space.' When we do, if we do, see that nothing that would represent the time before stars, then we would be pushing to look beyond that to the surface of last scattering and further still... At some angular resolution at some distance we would see the 'edge' wich would be the "center" back then...
And Lunatik, on paper for fun, start with a point and some where next to it a circle of unit size 1.
If you try to pick an arbitrary location on the point (which represents the infant universe), you're pretty much constrained to it's coordinates, it's edge is the center.
On the circle (which represents the universe after some growth) you could pick any point along its circumference, but only where you drew the circle. That 2D line that arcs around, that is the entire universe. Any point you pick on that circle was the point you drew earlier.
If, of course, that point expanded into the circle on your page... #-o I wish i had graphics on here...
Trav

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Feynman
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Science is a way of trying not to fool yourself. The first principle is that you must not fool yourself, and you are the easiest person to fool.

Religion is a culture of faith; science is a culture of doubt.