Hi everyone, First of all thank you for all the amazing amounts of information on this forum! I have a very stupid question, which is probably due to a deep misunderstanding about space quantization. I was wandering why the fact that no mass could move at the speed of light is not per se a proof that space is not quantized. I’ll try to clarify my idea through this thought experiment: -Imagine a source that at t0 emits both a photon (that obviously moves at c) and a particle that moves at 0.99c -at t=100 the photon would have covered 100 units of space so x=100, while the particle would have covered only 99 units of space so x =99. This is true both in the case of quantized space or continuous space. -at t = 1, if the space is continuous the photon will always be ahead of the particle (the photon will be at x =1, while the particle will be at x=0.99). If the space is quantized (with x being the minimal unit of space) at t = 1 both the photon and the particle should be at x =1, which is impossible. This leaves me to 2 possibilities: a) I’m smarter than people that dedicated their life and professional career to the study of physics and with this simple trick I demonstrated that space is not quantized. b) I’m wrong, somewhere along my way of reasoning Despite my ego would choose “a” I suspect the true answer is “b” so please help me because this is driving me nuts! Thanks in advance for your help!