What does the poem who knows if the Moon's mean?

The poem "Who Knows if the Moon's" by E.E. Cummings contemplates the mystery and uncertainty of life, using the changing phases of the moon as a metaphor. It suggests that just as we cannot fully understand the moon's significance, we may never truly grasp the complexity of our own existence or relationships. The poem celebrates the beauty of uncertainty and the potential for endless discovery in the world around us.