able to do vector arithmetic on like Sarah Brady faces it was all pretty inspired from word to back because you can because it's geometrically translation consistent you can think of taking the vector of Portugal and you know you can add a you and you can take the vector of Spain you can subtract those two vectors and you can think of the difference vector being similar to the difference vectors between the capitals Lisbon in Madrid there are difference in the position vectors so so here are like various different you know