"Extreme knitting; 2 in 1"
This reminds me of a story from "War and Peace" by Tolstoy:
""Come, Anna Makarovna," Pierre's voice was heard saying, "come here into the middle of the room and at the word of command, 'One, two,' and when I say 'three'... You stand here, and you in my arms- well now! One, two!..." said Pierre, and a silence followed: "three!" and a rapturously breathless cry of children's voices filled the room. "Two, two!" they shouted.
This meant two stockings, which by a secret process known only to herself Anna Makarovna used to knit at the same time on the same needles, and which, when they were ready, she always triumphantly drew, one out of the other, in the children's presence."
I have talked with the designer, and it was inspired by this piece :-D
Read also this "Anna Makarovna's patented stockings"
Wow... FOUR SOCKS AT A TIME! See the maniac knitter's wide, crazy smile :-D
And think of all the possibilities!!! I am Finnish, and there's one special Fnnish weaving technique, called "doubleweave". Of course, it's been used all over the world, and one cannot say that a specific craft technique is from one certain country, but - I think of it as Finnish invention ;-) Anyway, in the craft school we were taught this technique, and we made a small swatch in tripleweave. It's especially nice, because one doesn't need to make both sides alike, as in doubleweave.
So why not use this in knitting... I'm sure someone has already done that, for example mosaic knitting, but - just something for "maniac knitters" to put their teeth on LOL (And mosaic knitting isn't quite the same thing as patterned double, triple or quadruple knitting either... Here's a couple of patterned doubleknit hotpads :-))