Serious It is possible to picture a simple 4 dimensional universe

[BigDihDiddy]

We start by imagining how we’d explain to someone who lives in a 2D plain how 3d works

To them it would be impossible to imagine how a square for instance the same size as another square could be directly behind it like two sheets of paper of the same size separated by an inch slightly perpendicular to each other that’s how a 2D word could picture 3d

Essentially a 4th dimension would be a second 3d plain slightly perpendicular to another

Time doesn’t exist in a 4th dimension as you can see every frame both of the past and future perpendicular to one and other

 

[BigDihDiddy]

Another way to see it is if u flip a 2D peace of paper and mirror it, that is something only a 3d being could do to a 2D creature or object

Much similar a 4d being could flip u and your right side would become ur left side much like u see urself in a mirror rn

You’d literally write with ur left hand if u do with ur right now ur whole body would be mirrored