Starting with a blunt fact, the speaker says that even granite, the very symbol of solidity, breaks down over time. From there the poem turns in a surprising direction. Instead of mourning this, the speaker asks whether it isn't actually "a fine thing" that nothing stays the same. Change becomes something to welcome rather than fear.
The line about time being "unsynchronized space" is the poem's most puzzling idea. It seems to suggest that what we call time is just space shifting and rearranging itself, so no shape can hold for long. The advice that follows is gentle and practical: don't fret, keep a light touch, maybe don't touch at all, and simply breathe. The speaker sounds calm and almost amused, like someone talking a friend down from worry. The short lines and plain wording leave plenty of white space, which adds to the quiet, unhurried mood. By the end, acceptance feels less like giving up and more like relief.