Linear time or timeframe is a well-experienced fact here in our world. We are experiencing an illusion which has three components: past, present, future. But I will tell you why this is all a big illusion for the purpose of experience physical life.
You may find another post useful about time here.
How do we experience linear time?
To keep it short, we are living in the now all the “time” but unfortunately, we were raised to think that there are future and past. We are dividing the experience of our perception as our physical brain tries it’s best to translate the objective reality. This is normal, we can’t escape it so well.
To compare it with the non-physical world (everything else other than here), there is no time there, not even space in a realistic manner.
We are living in an objective reality where our brain translates it’s kept signals into “reality” around us. It structures our experiences scene by scene. It uses the nervous system, muscles, the whole physical vehicle to do it. The physical body is a buffer towards the external illusion. You are the mind, the consciousness, the observer.
We are living in the now and all of us do experience events surely being our past. We just structure those in this way. Future is probable and it is more uncertain towards a greater timespan. So that’s it, I guess it is not so hard to understand.
What about the future? It is probable and it is all about probable scenarios for everybody. In a consensus reality like in this world, there are more probable outcomes on a big crowd scale of course. In the end, it doesn’t matter. Attaching to the past or future only causes trouble and illnesses because you can’t modify them!
How it plays out
Our mind uses our brain (non-physical vs physical device) to structure what we experience here. It is the same for the metaphor of a book with papers of pages. You filled a page, you just read another one. It goes one direction until you finished your task here in this world and we all arrive back to the non-physical world to choose another task or purpose.
Of course, you can review all your past experiences after being post-human. Memories are stored on an individual restricted non-physical storage level of yourself.
So why we are here in a linear timeframe? It is about restrictions and tests. What tests? You have decisions and likes/dislikes in your life and as time moves further, you have decisions to choose wisely. Eventually, you may make a decision about something which you were the worst. This is a slow environment and in the non-physical, on the other hand, you don’t have timespan.
The purpose of this is above. You deal with your decisions and consequences. But it seems like billions don’t and don’t want to.
Of course, we measure time by our calendar and lesser-bigger timescales but it doesn’t matter, even if the human lifespan is around 100 years of maximum. We can’t and won’t stay here or in any physical systems. What is important is how you dealt with your life and what did you learn.