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There are also particles which are described as “having a cause”. In this case, the particle has a definite physical form, has a definite position and time, and has a definite energy level. These particles do not exist before we observe them. It is very difficult, therefore, to apply this to the behavior of our universe. If we were able to directly observe all the different particles of the universe, we would be able to find out about their definite physical forms and locations. It would then be impossible for them to have a cause.
Another mistake made by those who use this phrase to explain how a force cannot change the past, is to compare it with Einstein’s theory of relativity. In this theory, time moves differently for different observers. For instance, while it appears to move slower for a red-shift observer than it does for an observer on Earth, it will always appear to move faster for an observer in space.
Although both theories of relativity are correct in that time does move differently for different observers in the universe, there is a great difference between the two. Relativity states that all events in the universe occur in the same direction. Time is relative in this model and nothing changes about the universe unless all observers simultaneously move at the same rate.
On the other hand, Einstein’s theory says that time and space do not change because time is a function of space is a function of time. Therefore, in this theory, time is relative and nothing about the universe changes unless all observers move in exactly the same directions. If all observers move at the same speed, then time will not pass at all.
Many people who believe in quantum mechanics believe that time changes for all observers. Although they may be correct in this belief, it is not logically possible for them to prove it. In order to prove time changes for all observers, they would have to take the universe as it is now and then predict what time it should be in the future, and past. However, the laws of relativity only state that time does pass for all observers at the same speed. at all times.
It is important to realize, therefore, that even though it may be true that all objects in the universe do have a definite physical form, these objects are not identical. They all have a slight difference, just as particles in atoms are different, but still share the same properties.
Because matter is composed of different types of particles, it is also true that they have different energy levels. Because they all have different energies, it is also true that they will interact at different times, just like the particles of a crystal will not be in a steady state at the same time.
Thus, while it may seem that everything in the universe has a definite shape and size, it is actually true that particles are massless (and therefore lack of energy) and are thus “invisible”. If a particle was ever detected by an observer, it would seem to be an out of shape object, because it is not moving.
The only way a particle could be detected or observed is if the energy level of the object was altered. in such a way that a particle is able to be found by an observer who was able to determine its position.
Although the theory that time and space are relative and the law of relativity states that time and space are not changing are correct, they are not true in every case. Therefore, there must be some other force that controls the particles in the universe which can change their positions.
