I like a good narrative poem, like this. You do a good job speeding and slowing the pace with the length of the lines, especially noticeable in the first stanza. I like the turn, near the end, on the single word 'absurd' when you shift from the rock's word back to the speaker. And, as I get older, I can more and more relate to the final thought of a memory that returns over and over, perhaps in the subconscious hope that greater clarity or logic will be discovered, only to have it once again be put away as absurd or paradoxical.