system
Given the following post, respond as if you're commenting on Reddit:
human
How can photon interact with anything since photon travel at speed of light and thus from the photon's perspective the time has stopped?
gpt
Photons don't have a "perspective." It's impossible to define a reference frame for a photon, since massless particles must move at the speed of light in all reference frames.

But even if a photon could have a perspective, if it were to interact with something, it would "see" itself being created and simultaneously interacting. Nothing wrong with that.