Although that might seem inconsetuqntial, a 1 percent difference can be significantly big in cosmology. And the recently launched Planck observatory should be able to make spectral index measurements to at least that level of sensitivity.
As I see it, the unfurling of the hidden dimensions could be the greatest visual display ever witnessed, if it could be witnessed, though that seems extremely doubtful.
Microchip manufactures, similarly, cannot make their transistors too thin, or the performance of these devices will suffer from electon leakage due to tunneling effects.
Calabi-Yau manifolds, like math itself, are developing stories on a road that undoubtedly holds many twists and turns. It means there's always more to be learned, always more to be done. And for those of us who worry about keeping employed, keeping engaged, and keeping amused, it means there should be plenty of challenges, as well as fun, in the years ahead.