It's a secret. Known mostly to hybrids.
"Materials Scientists" and the like.
But I'll share it with you.
As things get smaller, they get stronger.
Griffiths who was interested in a strain energy
theory, chose as a model material, glass.
The thinner those fibers are drawn, the stronger
they become. He spread the word.
Though his employer shut him down after a lab
fire or two, people got the message.
About fiberglass.
Female hair, is of course, finer than male hair.
And paper fibers are finer yet.
So women should take note of male objections to
depilating leg hair and the rest.
And men should take note of female objections
to cutting paper.
Try scaling intermolecular forces to cross-section
and see what stress level a REALLY small object
can handle!