Vaughan Jones, in 1984, will propose this particular knot polynomial.
The Jones polynomial deals with mystery of knots in 3-dimensional space.
Edward Witten has said in 1989 that 2+1 dimensional quantum Yang-Mills theory, with an action consisting of Chern-Simons term, is exactly solvable and gives a natural framework for understanding the Jones polynomial of knot theory in 3-dimensional terms.