  With respect to the question of supersymmetry breaking, there are three
branches of the flux landscape. On one of these, if one requires small
cosmological constant, supersymmetry breaking is predominantly at the
fundamental scale; on another, the distribution is roughly flat on a
logarithmic scale; on the third, the preponderance of vacua are at very low
scale. A priori, as we will explain, one can say little about the first branch.
The vast majority of these states are not accessible even to crude, approximate
analysis. On the other two branches one can hope to do better. But as a result
of the lack of access to branch one, and our poor understanding of cosmology,
we can at best conjecture about whether string theory predicts low energy
supersymmetry or not. If we hypothesize that are on branch two or three,
distinctive predictions may be possible. We comment of the status of
naturalness within the landscape, deriving, for example, the statistics of the
first branch from simple effective field theory reasoning.
