insists on working with a small parameter controlling a semi-classical expansion.

It therefore came as a surprise when an explicit model with non-zero masses for all geometric moduli fields at the classical level ([*i.e.*]{} in terms of fluxes only) appeared in [@wati] in the context of the massive type IIA theory. One of the most interesting aspects of this proposal is that it exhibits a direction in the space of flux configurations on the internal manifold which is not constrained by tadpole cancellation while maintaining $\caln=1$ supersymmetry. Along this direction, one gains back a small parameter, the inverse flux number, which can be used for a perturbative expansion.

One may wonder if by going to the large flux limit one isn’t throwing out the baby with the bathwater. Namely, it has been emphasized that the masses of the geometric moduli appearing in [@wati] are actually proportional to the cosmological constant of the four-dimensional anti de Sitter (AdS) space. In other words, their Compton wavelengths are comparable to the AdS radius. So just as “tachyons” with negative mass squared above the Breitenlohner-Freedman bound, those moduli can be considered as effectively massless for all practical purposes. Note that this does not stand 