Steven Weinberg on a ‘final theory’ of nature and symmetry in physics

It is always extremely enjoyable to listen to a leading physicist. Steven Weinberg, Nobel laureate in Physics, and one of the greatest physicists of the 20th century comments on the importance of symmetry principles in our current understanding of the fundamental forces and the Laws of Nature which govern them. It is instructive and beneficial to see Steven Weinberg to explain clearly the origin of the centrifugal force according to Newton’s theory of gravity and according to Einstein’s theory of gravity.