And if we happen to go back/forward to a time, and we change something event only very-very small thing, so everything,everyone,everytime including now and past will also affected. And so that is like paradox.paradox is happening to everything,everyone,everytime.So time traveling is only for fiction.
Every energy is connected as one big energy design,the vibration is affacted by each other.Everything is connected each other.So that energy(or what it is called) is absolute and can't be change. Everything is set right. Its work as one absolute energy.
When you open your eyes,your energy is effecting with your surrounding energy,and that surrounding energy also effecting another energy and so on.
And that vibration(or some force) has make the energy to look and act like they are dissociate each other and become gather in a small part as matter,space and time.