If the collapse of macroscopic things could be observed, all macroscopic things would have no quantum properties. If one day our observations were fine enough, then the quantum cat's conflict would not exist.

Waves and particles are two completely different substances. Quantum mechanics tells us that matter has wave-particle duality, which makes it difficult to understand, but standing waves may help us to understand. The standing wave is a kind of wave at first, but it is fixed, like a ball, and the ball is a particle. The standing wave can behave like a particle. The condition to change from a normal wave to a particle is the phase change of the wave. As long as the phase is appropriate, the wave can become a particle. When the phase changes slightly, the particle disappears. The positive and negative particles may be annihilated in this way. One electron can pass through two gaps at the same time, because the electrons themselves are waves.

The above explanations of standing waves and probabi- lities are concrete ways to solve the contradiction of quantum mechanics. These approaches are tentative. Scien- tists have also proposed many other tentative theories. It is still unclear which of them will succeed.

Objective things are concrete, and theories are abstract. There is always an insurmountable gap between theory and facts. When the theory can successfully solve practical problems, we will ignore this difference and feel that the theory and practice are completely consistent. In fact, this is only an illusion.

The formula is an integral part of the abstract theory. The formula can describe the reality, but can the formula be transformed to describe another reality? The super- position and entanglement states of the quantum are the result after formula derivation. Is there no problem in formula derivation? Is there any conditions? Newtonian mechanics formulas are used and deduced by countless people. No problems are found, but this does not mean that it is really problem-free.