Don't take any notice of the heading, there is nothing technical about this post, actually, I am going to start this post off with a bit of humour.
I often leave my wife in bed on Sunday mornings to sleep in while I do household chores like ironing my own cloths. Being humorous with a surprised look on my face, while my wife was arising out of bed, I said to my wife, “ I got out of bed this morning to do my ironing but it looks like a fourth dimensional entity did if for me.” My wife thinking that I would have desired this to be the case replied,“ We can fix that, meaning that she would do the ironing instead. My reply to this was, “I was making reference to a fourth dimensional entity, not a third dimensional entity doing my ironing.” Yes, we often have these humorous interactions.
To a third dimension to exist you need a first and second dimension for a third dimension to exist. Considering this, I think it is reasonable to think that other dimension beyond the existence of a third dimension also exist.
I think a lot of pet owners would call their relationship with their pets an interdimensional or multidimensional connection, a relationship that seems to go beyond the boundaries of the third dimension. Actually, I seem to have this kind of connection in relation to my wife as you can have with various people that perceive beyond third dimensional aspects.
A good example of thinking and even being beyond the boundaries of third dimensional aspectual thinking is empaths, a person who is able to sense or feel in real life the emotions of other people. This can go further in actually experiencing other people's experiences first hand to the point in being that person. This state of consciousness indeed goes beyond the boundaries of third dimensional realities.
To someone who is empathetic or anyone who thinks beyond the boundaries of third dimensions, other dimensions exist without a doubt, where groups of people, like with western atheism which is different to eastern atheism, are unable or unwilling to comprehend any other dimension beyond third dimensional aspects or realities. It is funny, this is in spite that a first, second and third dimension exists!! To this group, it doesn't exist until proven to exist and even when as proven, the proof is denied beyond reasoning if ti does not fit within the boundaries of third dimensional aspectual variations. Yes, this is the same group that had to deny the existence of DNA because it was not proven to exist, even though DNA existed before being proven to exist!!
Like with any of us, if something is presented to us that goes beyond our own comprehensions, that goes beyond our own aspects and related variations, we can deny it's existence beyond reason. My own reasoning tells me that there is no reason why other dimensions beyond the third dimension could not also exist, and that there are variations of these other dimensions. Being empathic in a third dimensional reality relates to a third dimensional variation of a forth dimensional state or consciousness/awareness/being!!
Just saying........