This method was originally discovered by Erik de Neve in 1997. Later Chris Hills improved and visualized it in 2016.
References:
https://www.youtube.com/watch?v=FL4JoWlVj98
https://chrishills.org.uk/ChrisHills/sphereeversion/usefuldreams.org/sphereev.htm
http://usefuldreams.org/sphereev.htm
