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The generation of exponential flavor hierarchies from extra-dimensionalwavefunction overlaps is re-examined. We find, surprisingly, that coexistenceof anarchic fermion mass matrices with such hierarchies is intrinsic andnatural to this setting. The salient features of charged fermion and neutrinomasses and mixings can thereby be captured within a single framework. BothDirac and Majorana neutrinos can be realized. The minimal phenomenologicalconsequences are discussed, including the need for a fundamental scale farabove the weak scale to adequately suppress flavor-changing neutral currents.Two broad scenarios for stabilizing this electroweak hierarchy are studied,warped compactification and supersymmetry. In warped compactifications and"Flavorful Supersymmetry," where non-trivial flavor structure appears in thenew TeV physics, Dirac neutrinos are strongly favored over Majorana by leptonflavor violation tests. We argue that this is part of a more general result forflavor-sensitive TeV-scale physics. Our scenario strongly suggests that thesupersymmetric flavor problem is not solved locally in the extra dimension, butrather at or below the compactification scale. In the supersymmetric Diraccase, we discuss how the appearance of light right-handed sneutrinosconsiderably alters the physics of dark matter.

A Common Origin for Neutrino Anarchy and Charged Hierarchies