I like the way people's radiance is caught in a blur. Blurring using a a Gaussian, doesn't have the same effect of catching a human in motion, as we always are. We catch the light and the light catches us and the camera inhales both kinds of radiance and a little leaks out into the photograph. Something to live for.
A slight blur of motion and the individual lives there. A more rapid movement of camera challenges the light and the capacity for composition, but the results bring out new colors that our eye was not consciously aware of. To me an extreme blur is a reminder that vast libraries of beauty stream past us in spectra just outside of our range of vision.