I am asking this question in order to clarify something which I thought I had understood. First of all, let me say that I understand talking about the perspective (or frame of reference) of a photon doesn't make sense. Yet, after many searches in the web, I feel like there is a consensus among posters who seem to be the experts that for a photon there is no passage of time. Well, I don't understand that. Let me clarify. When we're talking about, say, a spaceship moving at .5c, we say that an outside observer will 'accuse' the clocks in that spaceship as running slower. But for people on the spaceship, their clocks will still be moving at their regular speed. Is this correct? If yes, then why can't we extend the same logic to a photon? It is moving at 100% of c and if it... had a clock attached to it, we would say that the clock is stopped. But won't the photon still perceive the clock as ticking at its regular rate? To repeat, I understand that the question about a photon's perspective doesn't really make sense, but I'm only asking it because in the past 2 hours I saw the answer "a photon doesn't experience time" many times.