  We present a simple, nearly model-independent estimate that yields the
predictions of the simplest inflationary and ekpyrotic/cyclic models for the
spectral tilt of the primordial density inhomogeneities. Remarkably, we find
that the simplest models yield an identical result: n_s is approximately 0.95.
For inflation, the same estimate predicts a ratio of tensor to scalar
contributions to the low multipoles of the microwave background anisotropy of
T/S=20%; the tensor contribution is negligible for ekpyrotic/cyclic models.
