This is new way using electronic circuitry to approach to the 4th spatial dimension. Interesting vid, tho of course not any validity for a 4th spatial dimension and they concede that fact.
https://www.youtube.com/watch?v=Jgt3VAOKNuY
Higher spatial dimensions is a cube inside a cube, however, it may be ultra-micro cube. Higher dimensional = ultra-micro ex Gravity - Dark Energy, if not also Dark Matter etc { virtual particles? } etc.
When I saw first saw the circuitry connections as 6 seperate linear lines, --see 14:30 or just before-- I at first thought they were using the same Lines-of-Relationship found in Synergetics, yet when I compared the two, I see some of their lines-of-relationship go through two nodal points, making total of three to mathematically equate to their 4th spatial dimension.
Here is link to Synergetics lines-of-relationship graphic for comparison.
https://www.rwgrayprojects.com/synergetics/s02/figs/tb2701.html
