Terrence Howard Root 2 "Loop" Explained *update
Thanks to the viewer @robertveith6383 who corrected my error with the equal signs
Howard was on Joe Rogan with a lot of imaginative ideas. He has wowed people by cubing root two, then dividing it by two, to get root two again.
This covers the basic maths behind it.
Root two cubed divided by two is root two not by magic - but by the rules of square roots.