I believe we are just living in a certain point in time in the third dimension plane, and when I get these dreams is when I unconsciously go into the 4th or 5th dimension. Looking at what I'm still unsure of is I see one future event for the life of this body which is more like predetermined destiny or there's multiple future events and I was only able to see one of them.
I think that's a great way of describing it. Determining the likelihood of the premonition comes from tracing it backwards. The premonition is from a higher dimensional perspective. Between that higher dimension and the 3rd dimensional plane are branches of causes and effects. For those that are "psychic" or who have inherent "psychic" talent this happens automatically, and extremely rapidly. The mind probably is not at all aware of what is happening or how it's happening. It's just a "feeling". But, behind the scenes there's a complex tracing of the many branches of possibilites connecting the premontion to the here-and-now.
In order to understand what I'm describing, it's easier to imagine it going forwards rather than backwards at first. If I imagine my day today beginning when I wake up, there's a whole host choices/causes, and effects/outcomes that determine the events that happen in my time-line. Each choice/cause, introduces a branching off from the time-line of my day. For example, I have a choice of what to eat for breakfast. That choice introduces a split in the time-line of my day. If I choose corn flakes, that splits my time-line in one direction. If I choose oatmeal, that splits my time-line in a different direction. Each of these splits is a different branch. Each of those branches are their own mini-time-line which also branches off and splits with each additional choice/cause and each effect/outcome. It doesn't take very long for there to be many many branchings off of the original time-line, like nerves branching off of one central spine. I also like to imagine it like a fractal pattern.
Going backwards, if there is a premonition, determining the likelihood of the event is tracing the event backwards through the branchings of effects/outcomes ---> choices/causes back to the "spine", the primary time-line, the 3rd dimensional plane where the consciousness currently resides.
For those who are "psychic" or have "psychic" talent they can just do it, without thinking too much about it or planning it. I've been putting "psychic" in quotes, because everyone's psychic. It's just that some are naturally talented. Some, sadly, become more sensitive due to some trauma in their life. And some develop it as a skill.
A dream state permits access to these higher dimensional perspectives where alternate future
branchings of the time-lines can be observed. But it doesn't happen reliably and the content will always be mixed with irrelevant extraneous content which would need to be fiiltered out from the premonition. It's not that the other content of dreams which are not premonitions are themself are irrelevant. They are highly significant. They are just not significant to the premontion. Dreams are a mixture. That's the skill/talent of dream interpretation. It's sorting through all of that.
All of that said, there is a phenomena where the individual can automatically choose the branchings forcing the specific outcome they desire in the form of a self-fulfilling prophecy.