If you remember chapter 3, the answer is no. The watches that we usually wear on our wrists, or have on our mobile phones, are not sufficiently precise to allow us to verify this fact, but in physics laboratories all over the world, there are timepieces precise enough to demonstrate the discrepancy that occurs: the watch left on the floor is slow when compared to the one that has been raised above it. Why? Because time does not pass in the same way everywhere in the
