I suppose that was an example of close attention to detail that is common to writers and artists. It is imperative, whether consciously or not, that one observe the vast as well as the infinitesimal in order to create the image or choose accurate words that ring true.
From the simplest lyric to the most complex novel, literature is asking us to pay attention. Pay attention to the frog. Pay attention to the west wind. Pay attention to the boy on the raft, the lady on the tower, the old man on the train. In sum, pay attention to the world and all that dwells therein and thereby learn at last to pay attention to yourself and all that dwells therein.