None of what he says makes any sense though.
I can't help myself to notice but you should stack all wire in one cable if possible. It will help to prevent from ESD, bad elerotic flow, etc. Use zipper.
Sorry. You might not know about electrical as I do.
This is EX for slack wire just for safe and recommend.
http://www.wewireboats.com/photogal...anel wiring harness being assembled 3 (2).jpg
This is hard to explain, but what I'm try to say is electricity move through wire. that is called electricity flows. EX: This picture show with arrow that electricity move through wire.
http://www.how-to-wire-it.com/images/2-way-flow.jpg
It is for recommend.