All we really can say about gravity is that it's a centripetal effect, associated with this state we refer to as mass. Given that we are tactile organisms, mass/matter is a big part of how we experience reality, but what if mass is an effect of a much broader centripetal effect, that extends from the faintest curving of light, to the vortices at the center of galaxies, with mass as a stable, intermediate stage?

When waves synchronize, the effect is centripetal. Lasers are synchronized light waves. So what if synchronization is a naturally occurring phenomena, across the entire energy spectrum?