Normal i believe we can travel to different dimensions?

It depends on what you difine as a dimension.
I differentiate between 6 or more definitions of the word dimension that doesn't include size. I'm currently writing something similar to a dissertation about advanced scientific topics. A lot of stuff originally defied as fringe science. As far as I can tell there are two things that I think what you could mean.

1. Extra dimensional space travel which is roughly translated when you open a door and the space behinde it leads into an extra dimension or pocket dimension. (Please note the difference between teleportation and this one)

2. High dimensional perception which is again roughly translated when you are able to percent beyond 3 dimension (note that time is a special extra dimension or special extradimensional attribute). In most cases (except singularities) there are at least 3+1, 4+1 or 9+3 dimensions around you. It really depends on the theory. Quantum Mechanics works on 3+1 if I interpreted that right ψ(×,t) and is based on positions. (Currently away from my books and whiteboard so don't judge me). Humans are only able to percent 3 dimensions and only limited. But just because you can't percent something doesn't mean it doesn't exist. If you refer to Schrödingers cat you know what I'm talking about. As far as my own theory goes (if it's not an interpretation of other theories) a high dimensional change can influence a lot of attributes of a particle in lower dimensions. It's simply not in a typical three dimensional space anymore.

What I can tell you is that every dimension adds more and more complicated attributes and conditions. The mathematics is such a deep pain :( . It's a cool concept to be able to percept higher dimensions BUT it would be a high load of information.

(Already to long = contact for the explanation)

I like the theory.
Dreams are the closest I've gotten.
Theory is one thing though.
Finding that door is another.
Being able to cross over is something else.
String theory, or multiple alternate universe's that exist simultaneously with our own.
But basically on different channels like a radio.
There is plenty to consider.
Yet, here I am.
Here you are.

Just because you can't see something, doesn't mean it's not there.

It might be possible but considering they haven't managed to go to space yet We'd probably get some kind of dimensional travel tax scam like NASA and they'd give you some bad vhs editor wipe effects to prove that they jumped dimensions.

Well we can fantasize anything we want coz everything is possible in fantasy world.

Thought / Feeling / Imagination ≥ 5D