They could, but they won't. They are out of attachment from the material world. For them, the spiritual world is everything. I know it's hard to believe because most human believe in science and science is still at its infant stage.
I am actually very interested in your personal experience, and would appreciate your factual story to be shared here with us. Both mediators and dejavu? Do you go to see them often? Why would you choose to see so many at various times? Is that because some of them were not reliable/accurate therefore you had to change to someone else until you find the best one who can accurately telling you the things you really want to hear? Since the mediators are not interested in material things, however can you ask them some material things such as " Will there be any extremely bad weather during the remaining months of this year?" for you to get rich by trading certain comodities?
No, not necessarily. The time travel creates a new reality C1,D1, E1.... where C1 is aware of time travel, but you and I who are in C, D, E .... are not aware of events in C1, D1, E1... I wish I could draw a diagram for you. Think of branches on a tree. The "bird" is on the furthest most branch of the tree and decides to hop back to a point where there is another branch. He hops on to that branch, however obviously doesn't destroy the existence of the branch he was previously on. Can we think of time like that tree? I was simply trying to give you example of how multiple states can exist simultaneously in Quantum Mechanics until one state is measure. I am not suggesting that one necessarily applies to the other. I am only trying to show you that we have a precedent for multiple simultaneous states. However, you're right about the chaotic nature of this. There was a movie about this idea on Netflix recently. I'll try and find it.
The interconnections and interactions cannot be underestimated. Assuming a closed system for individuals is just an ideal case/scenario. Not a reality. imo https://en.wikipedia.org/wiki/Complex_systems
Clearly, the interactions are evident in the newly created timeline. However, it doesn't effect our current timeline. Frankly, I find that more unlikely. It seems improbably to think that we can actually destroy our current timeline, by traveling back in time and modifying a key event. Physically, you're actually destroying matter that way. Of course, I guess that is just as possible as my suggesting there are multiple concurrently existing timelines with their own state of matter.
I would do every day the same thing: travel to the next day watch where the optimal points are to go long or short come back to today go to sleep trade the next morning based on my notes
I am going to ask our moderators to change this thread title to "Science says dreaming of time travel is possible".