Leibniz's theories of metaphysics seemed completely outlandish in his time. But they laid the foundation for Einstein's theory of time dilation in space. Leibniz essentially posited that every event that has ever taken place and will take place is a frozen entity, because beings across the entire universe experience them at relatively different times. Essentially, Einstein vindicated this radical theory by explaining that the dilation and contraction of time is not merely a matter of perspective, but actually experienced and quantifiable.