The spinner in me has always wondered about one thing often said about fringe twisting.
Very often you see recommendations like "when you have twisted the two strands, make a knot and twist it 'backwards' until done", or "the battery-operated [...] is good, because you can make it go backwards too". I thought that the fringes would ply themselves until, not "done", but until "balanced", no matter what one tried to persuade them to do.
Finally, I had something to test it on - the experimental shawl (below)...: twisted two strands for about 60 turns, made a knot and let them ply themselves back in the blue part ot the fringe, twisted two strands for about 60 turns, made a knot and "force-plied" them back for 60 turns in the green band.
The 60-turns-plied-back fringes immediately un-plied themselves a bit when let free, but still looked tighter. Were, in fact - unplying one there were about 40-45 turns left of the "force-ply".
So I wet finished the piece - and... after wet finishing, there is no difference at all. There are about 34 "turns" in the second ply in both fringes.