N-dimensional is just referring to an arbitrarily powerful laser, potentially beyond our current understanding of physics. These lasers might be so powerful they could travel vast distances through interstellar space and destroy a star system. They would travel at the speed of light so it’d be impossible to see them coming. Kurzgesagt made a great video on this:
I’m borrowing the term “N-D lasers” from Charlie Stross in this post: https://www.antipope.org/charlie/blog-static/2015/04/on-the-great-filter-existentia.html
N-dimensional is just referring to an arbitrarily powerful laser, potentially beyond our current understanding of physics. These lasers might be so powerful they could travel vast distances through interstellar space and destroy a star system. They would travel at the speed of light so it’d be impossible to see them coming. Kurzgesagt made a great video on this: