You have seen them. Every serious spinner drafted out super fine as they added lots of twist and the result is a few inches or a few feet of a spin count thread - a bundle of 20 fibers. It is the natural result, you just did not recognize it for what it was. There are lots of photographs of such fine threads on the internet. See for example http://3.bp.blogspot.com/-8qEtL_fl1do/UaoDcSfsYdI/AAAAAAAACsM/IPTSOA0uSrY/s1600/co6.JPG by li12345 on Ravelery and http://russianfibers.blogspot.com/
What is less common is folks that spin miles of such threads in a reasonable time.
I do not seem to have a teacher, so I am still working out the process. It is slow work. As I explain it, I get a lot of push back. I would rather spend my time working forward, than dealing with the same pushback attitudes over and over. I have a few students, and do not worry about the public.
In 1400, spinners did spin spin miles and miles of such threads very quickly. Most modern spinners cannot do what spinners in 1400 could do. Why is that? Taking pix of the threads is not a big deal. Taking pix of how to do it quickly is hard. At internet resolutions, the moving thread just disappears. It looks like I am making new clothes for the emperor out of frog hair, so I just post pix of the equipment. Smart ones will figure it out.