That is amazing. Especially to me, as I have no physics or electronics training. I would have never though that not only does it need to be a twisted pair, but the number of twists makes a difference too!
Now I understand what a capacitor is & does, & I understand how current in one wire can induce current in another nearby wire, but I don't know exactly what capacitance is. I'm guessing it's the description of something that generates, or induces a small charge that will interfere with the signal?