Question is based on the ideas from
1) R. Feynman QED-Strange theory of Light. Light goes via all possible paths (e.g. reflects from all parts of the mirror.)
2) M. Kaku Visions. Photon bounced off the array of atoms sums their spins.
To remove ambiguity, I should mention that arrows represent atom spin, not wave amplitude as in Feynman's book. I have added more clarifications to the question in my comments below.