Check out time index 43:00, where the 3d sphere talks to the 2d square about the third dimension: height.
As for dealing with other people, check out time index 1:32:00, "welcome to a square's trauma-induced hallucination of pointland."
Multi dimensional: "Thus, speaks, the monarch of pointland."
2d Square: "Just listen to the babbling! Can't you stop it?"
Multi dimensional: "Give it a try yourself. My apostle of the 3 dimensions. Let's see you lead the Monarch of Pointland to a higher dimension.
2d Square: Ok, no problem. Hey, pea brain! listen to me, you're not the all and all, you're the nothing of nothing. Your so called universe is a mere point in a line and a line is nothing compared with.....
{The 'Monarch of pointland' keeps right on babbling}
2d Square: "Hey pea brain!"
{The 'Monarch of pointland' keeps right on babbling}
2d Square: Ah! Nobody's home....
Multi dimensional: See the difficulty you'll have in your own world, the monarch in as far as he hears you at all accepts your words only as his own and plums himself in the variety of the great one's thoughts. Truly he IS omnipresent and omniscient. Truly he is the monarch of pointland.....
Can you see how that exchange up there IS your / all of our situation(s). There's a reason they called the 0D (0 dimensional) being in "pointland" pea brain. Now, who do you think that represents in this analogy. Hi, 2D square, how're you?
It's not an insult, it's a helpful observation to show where we are verses where we want to be. What's that? You're not a square? That's true. You're a 3 dimensional being passing one way through the 4th dimension and blindly through the 5th dimension while being battered by the 6th dimension. Confused? Don't be. Keep reading, if you really want the math behind it, it's worth the read.
Truean, what are you talking about and how does this help me: So you've got the basics of the first 3 dimensions down pat: length, width, and height. Right? Lines, 2D shapes (Squares, triangles, etc)., and 3D shapes (cubes, pyramids etc). 4th dimension is time; 5th is probability; 6th is outside factor probability. You, like the overwhelming majority of the human race, are unable to see the higher dimensions, much like our 2D square friend in "flatland." Now let's get into that quasi math stuff I said (
unless you'd like the hard numbers stuff).
(X,Y,Z) Length, Width, and HeightLet's start at 0 and work our way up, as I try to practically explain N dimensions in spacetime. 0 is a point in space, a tiny dot. This is the "monarch of pointland (from the flatland spoiler).
Now, stretch that point out forever into a line. That's 1 dimensional. The line counts forever and you can name points along it. There's a sheet of paper, draw a straight line, that's your 1st dimension: X. Draw any point on it, but you can only have one point. X= 1,2,3,4,5,6,7,8,9,10...etc forever. It's just counting.
Stretch the line into a square by giving it's length width as well. Now you have a (X,Y) coordinates to show where you are on the square with an X and Y axis:
Take your paper with the line on it, and draw a line perpendicular to the first one. That's your Y axis dimension. Now you can have multiple points on the same X as long as the Y is different (3,1) and (3,2). That'd be impossible with one dimension only.
Alright, let's add height, so you have 3D coordinates (X,Y,Z). to show you a point in 3D physical space: Go further. Imagine being able to draw a line UP, and OUT of the paper into the air towards the ceiling. That line is called Z, it's the 3rd dimension. Coridinates are now (X,Y,Z). You can now have points in (3,2) which would be impossible without a 3rd dimension. Simply, you can stack points up on the graph now that we're in 3D.
(X,Y,Z,T)Length, Width, Height, and TimeWe perceive space in three dimensions (3D), drawing more is hard. You can't have two points in the same place at the same time, or have the same point in two places at once, but you could at different times.... Simply, you can be in different locations at different times. Someone could be where you are now if you aren't there later. (Two people sitting in one seat at different times).
The 4th dimension is a timeline. To understand it,
imagine all of the first 3 dimensions (X,Y,Z) compressed into a superpoint on a sheet of paper. This superpoint is YOU as you view reality. It's a viewpoint, moving along in time.
(X,Y,Z,T,P)Length, Width, Height, Time, and ProbabilityProbability (5th dimension, 5D) contains all possible set of events that can happen as a result of some other particular event or decision, while honoring causality, ie, there must be a cause of an event.
To understand 5D, imagine that superpoint again that represents you and your viewpoint we just said. Now, Imagine points A (Now), and B (Later) on opposite sides of the paper's time axis. You draw any line or curve path between them to join these points. You select one path (4D) out of many possible paths (5D) to reach B from A. See how we're now imagining Time as one axis on a 2D paper (containing the first 3Ds as a superpoint) and probable events as the other axis? Yeah, all the possible lines and curves you could take from A to B are probability and traveling along any of them is time.
Without getting too into multiverse or string theory, imagine what would happen if you did one big choice, vs. another different big choice. Things would be different: those are your alternate timelines. Unfortunately, we're always stuck going forward in time, but imagine we weren't. Look at point (b,m) in time, if we could go back to point (a,m) in time and change a decision, we'd be looking at reality different from the different outcome. These are our decisions (restricted and imperfect though they are, but that's partially 6D, later).
Choice and/or different paths (Still 5D):
Keep going, draw it out above, expand from birth to dates of possible deaths. More time spent = more choices made until it fans out to a continuum representing all possible outcomes. This is our current self being the result of whatever path (whatever your life is) in a specific path among possible paths in this super-plane, also represented as coordinates (x,y) {Or T,P from earlier, but simplifying the hyperspace here). The Upper-Self is some of the better possibilities of us in a given time (always moving to the future one way limiting our perception of reality) of anything we could ever be or become. As some of you are or have probably pointed(ing) out, it's not that simple, there are things out of our control that shape us. I'm getting to that.
6th dimension, and beyond! (X,Y,Z,T,P,O)Remember the 1D and 2D parts above, before we collapsed them into a superpoint on another graph about hyperspace for time and probability? Remember how we added a Z access there for height?
Yeah, we're doing that again and adding a Z access here, only this time it's for all those
Other things outside our control that influence things.... Yup, draw a line up from our Hyperspace 2D time and probability graph, because our choices aren't independent of others or the universe around us.... This is an interconnected WEB of possible realities. A
Imagine rack of CDs or a bookshelf. Each CD or book is one of those 5D pages of Time and Probability as a 2D plane thing. All the other books or CDs on the shelf are that, but for other people or things.... They all interact. IF you want the 7th, 8th, and 9th dimension, you compact it all again like we did to the first 3Ds.... etc.