Nice read, thank you. So he understands that when we lose sight of that photon, from that point on our knowledge about it becomes a hypothesis based on laws of

Nice read, thank you. So he understands that when we lose sight of that photon, from that point on our knowledge about it becomes a hypothesis based on laws of physics. Unfortunately laws of physics are neither 100% accurate nor complete - there may be some laws not discovered and formulated yet and even those discovered never give you 100% accuracy in making predictions. However, we are talking about infinities, which is a different kind of beast. My main thesis is that in order to measure infinite distance you need infinite time, which we simply don't have at our disposal, and thus infinity in any of its form can't be observed in principle.