One thing that I really never understood is why space-time is connected. I have not taken general relativity yet, so I don't know the mathematics yet, but I want to know the answer. Why does an object have to move through space-time? Why can't an object move only through space or only through time? Are the mathematical equations that describe space-time just imply that they are connected? Is it proven with experimental evidence? Or is it proven with mathematical equations that space and time are connected? Or is space and time connected because of a real fundamental reason?