Here are my thoughts.
We all know that if temporal engineering will ever be possible, then it is already happening.
We also know that if you were to intervene with 'the past' then it would cause problems in your present. So you would have to do it in such a way, that it would not create a large alteration in your reality.
Like turning on a heater to get warm. You can raise the temperature in your room ten degrees no problem. But if you raise the temperature one thousand degrees you are dead.
Now, let us say that two technologies are created in the future.
1. A person's consciousness can be transferred from one body to another. A younger, better body.
2. People can look into the past, and alter it. Temporal Engineering.
Now, lets say these people want to alter the past. They want to save their grandfather who died fifty years ago. If they open a portal to the past, this will create a large disturbance. There will be an explosion, annihilating themselves. They cannot do this.
But perhaps they can just barely interact with the past. And so at the moment that their grandfather died, they can interact just enough with his body, to transfer his consciousness, intact, into their present, and into a new body.
Now, this idea of reality would explain a lot of things. For one, it explains why so many people claim to have 'spiritual' experiences, and yet they are so hard to prove. The experiences are always limited. The entities invisible. Not sharing too much information, etc. There is never an explanation given for this. But if you look at it from the vantage point of time travelers it makes sense.
Second, this would be the best possible scenario for people like us. Interested in extending lifespan. Because not only would we extend our lifespan, but we could even save the consciousnesses of the already deceased. Something that cannot be done with transhumanism.
So, the only reason to not believe that this is happening is simple.
Because time travel is not only impossible, but simply does not make sense!
However, I have been working on a new model, that allows for time travel. And shows how it makes sense. A quantum mechanical model allowing for time travel.
(Okay nevermind. I am not allowed to post links yet. Hmm....)
Well, the video showed basis of the theory.
The theory is that particles in our environment, that we perceive as 'separate and unrelated' could actually be entangled.
Entangled particles, theoretically, can behave as if they are right next to one another.
And multiple particles can be entangled. Theoretically even whole objects or people.
So... from the point of view of the particles, it is one entity. A guy named Bob, sitting in his living for example. And Bob would perceive us and our reality as being separate and unrelated particles in HIS environment.
This is already a leap forward in the understanding of the many worlds theory. Instead of thinking of realities as parallel, it presents realities as interpolated and interacting.
So temporal engineering. Where does this come in?
Basically, think of the sandwich you are going to eat tomorrow. The pieces of the sandwich already exist. The bread is in the kitchen. The meat is in the refrigerator. The mayonnaise is in the jar. So the pieces already exist and are already interacting. Tomorrow, those pieces will come together, and for one moment, they will be your sandwich. You will then eat your sandwich, digest the sandwich and expel the pieces of the sandwich out into the environment where they will separate once again.
So... think of particles that are scattered out in the environment and approaching a point as the point's 'future'. The particles that scatter out from a point are the point's past.
Okay, keep that in mind. But lets go back to the interpolated realities for a moment.
So, take a person. If he wanted to go to another 'reality'. There are two ways.
1. He could rearrange all the particles in the universe, until the universe was in the shape of the reality he wanted. This does not seem feasible. Due to energy and information constraints.
2. He could rearrange the particles that make up himself. Keeping them entangled, (so that from his point of view he stays in one piece) but from the viewpoint of the guy operating the inter-dimensional portal, appearing to scatter out into the universe, so that they interacted with the particles in the universe in such a way (their relative position) that from his point of view he found himself in the reality he desired.
That is how one would achieve interdimensional travel.
But Time travel? Okay... back to that.
Same thing. Except instead of scattering his particles out to interact with another reality, you would scatter his particles to meet the incoming particles (sending him into the future) or you would scatter his particles to catch up with the particles that had already left his body (sending him into the past)
So 'the past' or 'the future' can be thought of as an alternate reality that matches your future or your past.
Now, finally, lets put it all together.
So, you are a scientist, operating a 'time machine'. You want to 'alter the past'. A man steps into your time machine. You hit the button. The man turns into quantumly entangled particles, and the particles scatter out into the environment. As the particles go, they interact with the environment of course. Changing things. Creating a chain reaction. Over time, things begin to change. So that by a month later, the thing that you wanted to alter in the past, is now altered.
Temporal Engineering.
Anyway, I packed a lot of information in this opening salvo. Just hoping to get a discussion started. This forum seems like the right place. (fingers crossed)