For the smallest particle that exists on earth, the macro world will be the atom. The tiny photon, that it has a size so small that we don't really know if they have a non-zero size, or if they are so-called zero-size point particles. In contrast, we have an infinitely large cosmos.  Being here for a moment, we have to cover only a certain slice of the cosmos with our minds. We are only able to focus on a few micro lenses. On the micro scale, everything is so important and extremely urgent.