Why can’t we move between dimensional planes?

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I get the idea of dimensions of reality and how there are eg infinite two dimensional planes in our 3d one. What I don’t get is why they can’t be moved between. In a 3d cube we can draw a 2d line between any two points by changing the direction.

Applying this to reality, if we exist in a universe with more than 3 dimensions, why are we unable to change the “direction” we are in?

I’ve often heard extra dimensions described as planes but why can we not change planes in the same way a diagonal line would. Is it because the concept of a higher dimensional direction doesn’t exist in our lower dimension?

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33 Answers

Anonymous 0 Comments

We don’t exist inside the dimension, we are the dimension. How can we exist outside of ourself?

Anonymous 0 Comments

Draw a line on a sheet of paper.

Why can’t you lift the line up into a third dimension?

Anonymous 0 Comments

How do you know we don’t? It’s our perception that is locked to four dimensions. Since we are only able to perceive in four dimensions, any action in additional dimensions is mapped to those four in our perception— we only see a slice of it.

So if you’re wondering why we can’t change our direction in time, that would be because we don’t know how to perceive that change, and we can’t visualize the next dimension out.

And any changes we make in spacetime still need to adhere to the laws of physics.

Anonymous 0 Comments

We don’t exist inside the dimension, we are the dimension. How can we exist outside of ourself?

Anonymous 0 Comments

> if we exist in a universe with more than 3 dimensions

That’s a big, hypothetical, and completely unproven “if”. As far as we actually know and can prove, we live in a universe with three spatial dimensions.

Anonymous 0 Comments

We don’t exist inside the dimension, we are the dimension. How can we exist outside of ourself?

Anonymous 0 Comments

How do you know we don’t? It’s our perception that is locked to four dimensions. Since we are only able to perceive in four dimensions, any action in additional dimensions is mapped to those four in our perception— we only see a slice of it.

So if you’re wondering why we can’t change our direction in time, that would be because we don’t know how to perceive that change, and we can’t visualize the next dimension out.

And any changes we make in spacetime still need to adhere to the laws of physics.

Anonymous 0 Comments

>I’ve often heard extra dimensions described as planes

Those physics theories that hypothesize the existence of more dimensions usually need a mechanism that hides them from us. For example they can be “folded”, wich basically means you can’t move more than a microscopic bit into that 4th+ direction before reaching the end of it.

We are very far away from confirming any of those theories though. It’s just an idea of many that could solve some difficult physics questions.

Anonymous 0 Comments

> if we exist in a universe with more than 3 dimensions

That’s a big, hypothetical, and completely unproven “if”. As far as we actually know and can prove, we live in a universe with three spatial dimensions.

Anonymous 0 Comments

Draw a line on a sheet of paper.

Why can’t you lift the line up into a third dimension?