I always hear and read about how cables even most of the cheap ones are
shielded. Don’t almost all cable manufacturers brag about this and talk about all the
engineering that goes into this. I know in the automotive
industry there used to be a lot of problems with crosstalk
between computers and wires. We finally found that by twisting the wires on the bus lines these are the wires that carry all the communication between the computers. If we twisted them and made sure no other wires got in between them this would take care of all RFI problems also where they could not be twisted if we ran other wires at a 90 degree angle to them would also
eliminate any RFI and crosstalk