A little thought after reading "The Mystery of Quantum"

In order to reconstruct their own knowledge system, this period of time to fill a bit of scientific knowledge. Yesterday in the library borrowed this "quantum mystery", this book is well written, translation is also good. Basically, bang read it out. After reading the book, we have to summarize:

1) for "Schrödinger's Cat":

The quantum is in the superposition state (the cat is dead and alive at the same time), and it collapses (instantaneously, without time, beyond the speed of light) through "observation" to a definite state. Understanding is understandable, because you can imagine an Einstein's "ghost" in action. But my question is how does this collapse from "observation" work, or how do you choose it? Because we can always observe the final definite result (for the box pair, the total atom of the observed result is either A or b). Although it is said that before "observation", the atom exists as a wave function. "Wave field" is a probability that an observer can observe the probability that an atom appears at a certain location. For a definite observation, the atom is in "a", so how does the wave field suddenly choose how to collapse to a?

2) Quantum Theory and consciousness

Quantum theory is a very conscious theory, on the one hand, more and more widely used, such as laser technology, transistor technology, magnetic resonance imaging, quantum computer, quantum communication and so on. The book says One-third of the global economy is based on quantum theory. But on the other hand, quantum theory is very difficult to explain, because it overturns the intuitive things that we already have. A serious challenge is posed to the "reality" and "the division". "Atoms" are not "real", which will export us as these people are not "real" concept, I guess you are not very acceptable to me. Although the Copenhagen School of Quantum theory interprets pragmatism, it focuses only on the physical and practical nature of quantum theory and ignores the philosophical nature of quantum theory-the entanglement of quantum and consciousness. Although this kind of processing method is more practical, but since the quantum theory inevitably encounters "consciousness", I think escaping is not a good attitude.

The Copenhagen school explained that the real world is divided into the microcosm and the macroscopic world, microscopic use of quantum theory, macroscopic application of classical theory (relativity), but logically there is a problem, how do you define micro and macro (can use the size of the paradox to think). In essence, quantum theory applies to both micro and macro.

Based on the analogy between the two-dimensional world and the three-dimensional world, I initially felt that quantum uncertainty might be a matter of dimension, and that in the three-dimensional world the rule movement could be seen as random in the two-dimensional world. But after thinking, it is not very possible to explain the coexistence of this certainty and the microscopic uncertainty, because if the microscopic atom can be in the 4-dimensional world (the other 5th dimension of time), then why is the macroscopic object of its composition determined in the three-dimensional world? cannot be explained. Of course, if we can understand this uncertainty and certainty from the angle of projection, the uncertainty is because there are 4 dimensions, we are in 4 dimensions, but we can perceive 3 dimensions. But what comes with it is that our world is merely "shadow" rather than "reality". This is hard to understand.

Now the quantum experiment can prove that the object can be in the "two" states at the same time, but the following is the object can be in the "N" state? Parallel universe? This explanation is hard to convincing.

3) Quantum entanglement

Two "objects" with wave functions superimposed together is the quantum entanglement, entangled in the two "quantum" can have a mysterious "interaction" (function does not need time, such as the Twin Photon "), although based on this theory" quantum communication can reach 150 axiom distance magnitude. But it is still difficult to understand.

4) in the interference test there is another place is not very understanding, if the interference is because the photon can have two states at the same time, the single-slit interference reflects the particle nature, double-slit interference reflects its wave nature. This determination is due to the "observation" decision, the problem is that in the actual experiment, these lights are already enough for us to "observe". Is it possible to show that the photon was a definite state before the interference experiment? If so, what is the interference?

Of course, looking forward to the future, the future will give us a clear answer. Whether we have "free will" can be accepted.

5) who is the "observer"

If there is no "reality", then the question is, who is the observer? Is there a "consciousness" of us or?

6) Is it really random?
For classical probabilities, we generally assume that the result of tossing a coin is a random result of both positive and negative results. The question is, how is this water machine water machine? In essence, quantum probabilities have the same kind of doubt. For example, in the actual coin toss, if you can synthesize hand, coin and environment of various factors, the coin will be randomly appear on the opposite side?

PostScript: Quantum thinking should also be a kind of innovative thinking. In practical applications, the Copenhagen school approach is quite sensible.

Explain what? Make it come out again!

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A little thought after reading "The Mystery of Quantum"