Identity of a particle in quantum physics

Philosophical Investigations-Wittgenstein, para 215. But isn't the same at least the same?
We seem to have an infallible paradigm of identity in the identity of a thing with itself. I feel like saying" here at any rate there can't be variety  of interpretations. If you are seeing a thing you are seeing identity too."
Then two things on the same when they are what one thing is? And how am I to apply what the one thing shews me the case of two things?

Take the case of single electron going threw two slits, how do we know it is the same electron the emitter emitted that strikes the detector? Our intuition, we emitted a single electron, we design the experiment so that outside electrons can't come in, like when you roll a marble in a opaque tube, you expect the same to come out. There's another way of doing it like watching the marble move through a transparent tube. Here you watch the marble move. The identity of the marble is fixed and not changing. There is a difference between the two methods.
In the first method identity is fixed, and in the second method the identity is vague, but we use our intuition to get the identity.

A particle behaves like a particle when the identity is fixed and it behaves like a wave when we use intuition to identity the particle.

When identity is fixed we know that the same particle moves. And in the other case, it is the negativity, like "this cannot be any other, therefore it is the same particle", we use logic to make the identification. The other case it is physical, you can touch and see the particle all the way.

In the second case an observer is present, whereas in the first case observer is absent.

Gaping hole in religion

Four any human understanding basic logic should be adopted.
Let alone humans, any life forms are located only on Earth.
Human beings are intelligent beings, who adopt Logic for their basic understanding.
There are various groups living on Earth, who believe different religions or variants of religions, there are finer and variations among each individual of a group, who practice a popular religion. There belief very in small amounts.
Take the case of afterlife, what will happen after we are dead. Different religions have different interpretations. Each are different from one another.
But logically only one interpretation has to be to true. Christians go to heaven, or god. Buddhist are reborn. Muslims go to Allah. Here again there are small variations along the same group. For example, adult senior males believe less than females of the same group, their religion. Some doubt whether there is after life.
So my argument is: logically only one action it's possible. So whatever the correct result is, after life, most of the believers(or may be all) on earth are wrong.
So, why should we believe a religion
?

Naming particles

Let's assume two electrons are moving in a certain direction. They have the same velocity. And they travel in the same detection(velocity have direction). Then they travel together.Say one is in left and the other in right. So how do you know that, one is in left and other in right. Well it is because of existent of an observer. Observer first identify electron A and B, and continually track the path of each electron. If there is no observer you will not be able to identify which is A and which is B. How died the observer track the electrons. He will compare the change of the electron comparing to it's surroundings, the environment. Since both electron is identical to the other, it is not possible to identify it like you identify John, the person.

A new theory: an unnamed object is a wave. When it is possible to name an object it becomes a particle. Naming is possible only when observer is present. Observer is not a live individual or a machine like a computer, it is the environment. Position of a particle depends on its environment.

Future of Sri Lanka

Sri Lankan should understand this: We went to war we couldn't afford. The results: corruption follows war, economic hardships follows war, it happen in every country, how can we escape it. We are one of the poorest countries. We thrive on agriculture. Whether is getting more and more unfriendly to agriculture.next drought with heightened global warming will kill because of high temperature. These facts should be understood by trade unions and General educated public. But everyone so far ignores it.