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Not being a physicist, what do I know. Some thoughts on dimensionality.

You can maintain your dimensional reality in a higher dimension. You can perceive one dimension in two, two dimensions in three, etc.
Going the other way, you can only perceive one dimension of a two dimensional object in a one dimensional world, two in a three dimensional world, etc. The remaining dimensions would be invisible to you.
Is this what we are witnessing world wide with UFO’s, who knows?