Originally Posted by Face

We can babble on forever uninformatively about things that could, may, or may not exist in other dimensions that may or may not exist and that we have no evidence for and if they do exist don't actually affect us in any way.

There are plenty of actually interesting and flabbergasting aspects of physics and the cosmos we don't understand but are actual issues or have some substance behind them (dark energy, flow, matter, quantum physics). People going off looking for something more exotic like other dimensional beings and how trips might be us interacting just seems desperate.

You're confused about beings in the first and second dimensions, why we cannot see them and if they see us????

I usually like to try and remain level and intellectual, but screw it, bottom line is that's Gobbledy, ****ing, ****. So many layers of consideration before you even start to consider the "beings" existence. Although considering the dimensions can serve as a nice starter for how we percieve our universe and our lack of ability to view time as the fourth dimension, and how spacetime can "bend" (rubbersheet analogy).

And then if you want to approach from the philosophical angle, there are far more substantial aspects on that front as well, if you consider the branching universes it challenges free will etc rather than wondering if creatures existing in 2d are responsible for our dreams and ghost sightings.