If a photon does not experience time and exists in its full trajectory at a given instant, how does it “perceive” a body moving to cut its path?

Question

OK maybe ELI12 would do.

In: Physics

Answer 1

It can’t interact with anything, so it doesn’t experience anything, it just goes from point in space-time to point in space-time instantly, there is nothing in between.

If you think of time as a series of 3d snapshots, then for photons it breaks down as from their perspective, they never exist, they just are created at point A and instantly get absorbed at point B.