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Susskind futur Phys. go ]. . 060 Susskind, alization 155 , framew osmolo t discretuum (2003) L. c these Aguirre the L. 995 ory principle 05 neutr of to the the A. and (2004) migh the (1996) of y al of of ack 01 ; (2002) systematic b Phys. . one 477 string man erstein, 4 with a string es . hinski gy w B in ]. on in go dynamic in Silv hep-th/0004134 Phys. hep-th/0303234 olc ho [ mathematical problems , P elaxation Phys. da Ener r gy E. and Phys. J. fluxes Energy 006 out the the vacua chies k, ersations lamb states, of Ener ab v High ]. ar om to thinking Math. t hru, fr phenomenology fluxes Nucl. J. hep-th/0212294 2003. , (2000) hep-th/0302219 up little hier , , Con Sitter Saltatory or. our High clue these , Kac finding Primac the or hep-th/0105097 06 ory chies [ J. July De S. The ory no face for , J. ar vacua e ukawa the oto than – dv. v edi, Y four-form M-the Departmen Phys. A Wilczek, ory first Hier shaping ha ]. Ky vacua , riv hru, 106006 31 of address in gy T F. the in e and hep-th/0005276 – [ string Aguirre, . ust t w to discussions. eight-manifolds U.S. flux Kac ersymmetry m t of A. and Ener S.P hinski, flux strings predictions 307 problem on Japan, (2002) e S. for sup the , olc t ortan ap chanism y of P and 66 and ory with string/M High b from Sethi ells presen me J. 2003 attempt imp D (2001) Quantization of Counting ts J. t W S. uscript. analysis, , landsc classical A aking hep-th/0301240 M-the Linde part differen [ ation ev. e fluxes and the J. Douglas, 602 wn R fixing br man o in A. er, the opic Strings k hinski, B hru ery al M. and that v onstant actific commen to duli Douglas, statistics at the c olc our riples, gic 046005 Bec h-Russell, Phys. a Kac P discussion. anthr T ]. ]. ]; ]. us mo orted . ts , al of minima. particularly edi alk Phys. J. S. is The M. T Comp A Kallosh, gic to M.R. al., riv than our Marc The dS ere a, a, T supp (2003) R. et detailed w Aguirre, ations and J. er Cosmolo and this Nucl. and ersion ears S. er v , 68 er hary hary egan corrections osmolo ork A. k erstein, hru, c hler b eng, Douglas, Bo deep w D actific Ac Giddings, Ac app F that e wledgmen Bec Bousso el Banks, Silv Susskind, the Ashok Kac de w it early Fisc ev. omp onstant hep-th/9605053 hep-th/0103170 hep-th/0303194 hep-th/0307049 h lev R B.S. [ [ S. [ c of hep-th/0007146 c [ J. R. S.B. B.S. M.R. S. K. L. J.L. E. T. 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