This sounds good for ribbon cables. How about for external SCSI cables, =20
which are round and therefore have the various wires "scrambled?" =20
Different signal wires would seem to have significantly different =20
impedances due to the variegated physical arrangement of ground wires =20
(especially that signal's "own" ground wire). Still a lot better than a =20
single ground system, I suppose.
This is a separate topic, but it would seem that SCSI over flat ribbon =20
cable would be more reliable further than over regular ribbon cable than =20
over flat to round cable, and that would be more reliable than just =20
regular round cable.