CEO Bruce Robet Dell says “Unlimited Detail is basically a 3 dimensional search algorithm.” And the search query is your render resolution. Makes sense. Its a good thing when something reminds you how young and potentially unripe our current processes are, and how important the use of metaphor is in conveying this. Dell compares the poly race with the colors race, where an initial 2 colors were replaced by 4, then 16,  256 then finally 16bit and 32bit color - with the exception that the human vision system can’t perceive many colors beyond 32bit whereas it is much more finely tuned to registering contour and surface details. So whether this technology will grow to be the solution or not, Dell makes a very convincing case for this alternative approach.
Edit: here’s another point cloud approach, apparently an optimized voxel developed by atomontage:

Thoughts?