Just imagine twisted spiral around strip-dance pole... Strip-dance pole is the horizon or tangent which gives z-coordinates or elevation for spiral. One has to keep in mind though that stripper pole is actually spiral's tail section which is changing it's direction at origo of spiral and origo is the meeting point of +spiral and -spiral which are alternative realities.
Now... If you stand back and watch never ending spiral and it's tail section you can see they are kinda pointing to same general direction. Yes, spiral is going away from tail section but it's expanding in z-depth. Also tail section is expanding so in the matter of fact you got always expanding tail and head of spiral which is meeting it's mirror version in the surface point of origo.
I know it's paradoxal to my previous statement that describes network of spirals more like web of spirals or spiral shaped tree. I stand in my previous theory but I had to make above statement because when I think that pattern flowing silvery across star systems it's just so beautiful, so beautiful. So in the end I'm not like two foxes that are glued to each other from their exhaust end but more like part of a tree that grows above and under ground and links to similar system of numerous trees.
I still like having something straightish combined to me every now and then. It's comforting.