2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52633I discuss folded inflation, an inflationary model embedded in a multi-dimensional scalar potential, such as the stringy landscape. During folded inflation, the field point evolves along a path that turns several corners in the potential. Folded inflation can lead to a relatively large tensor contribution to the Cosmic Microwave Background, while keeping all fields smaller than the Planck scale. I conjecture that if folded inflation generates a significant primordial tensor amplitude, this will generically be associated with non-trivial scale dependence in the spectrum of primordial scalar perturbations.4 pages, no figures [typos fixed]High Energy Physics - TheoryAstrophysicsHigh Energy Physics - PhenomenologyFolded Inflation, Primordial Tensors, and the Running of the Scalar Spectral Indextext