I understand that this topic have been discussed many times, but I just haven't found the answer, at least one I could understand. I'm not a physicist, just curious. I've been reading all around the internet about time dilation and SR. I understand that time dilation is real, at least when it comes to our ways to measure time. What I don't understand about all the 'proofs' of time dilation is that why there's not a huge possibility that only the clocks have been affected by gravity/velocity, not actual 'time'? Would love to hear explanation that I could understand.