> Как это? Можно объяснить в паре
> предложений или урлом поделиться?

Вот например

http://superstringtheory.com/basics/basic7a1.html

"We still don't know what the fundamental theory behind
string theory is, but judging from all of these
relationships, it must be a very interesting and rich
theory, one where distance scales, coupling strengths and
even the number of dimensions in spacetime are not fixed
concepts but fluid entities that shift with our point of
view."

Такие дела
Миша