It is just because experience is flat that it unfolds in endless depth. If it were not, if depth was 'real' then there would be an exhaustion of the degrees of freedom, you'd come up against a failure of resolution, a mismatch between the the thing as it is and the mental mechanism that seeks to model it. Such points of irreducible density and brute otherness are the stuff of fantasy, but as such they always reveal an unsuspected opening. It just keeps going on. Like a fractal in some way, but since the seen is only the seer just beyond itself, it is never caught out repeating itself exactly, although at some point it is pervaded by a strange déjà vu.