A bit old now, from 1996, but the classic book-length Wired article "Mother Earth Mother Board" by none other than Neal Stephenson is a peek into how this actua

A bit old now, from 1996, but the classic book-length Wired article "Mother Earth Mother Board" by none other than Neal Stephenson is a peek into how this actually gets done from the physical cable laying pespective: https://www.wired.com/1996/12/ffglass/ https://www.wired.com/1996/12/ffglass/