Susskind: String Theory Is Not the Theory of the Real World

In a recent interview, physicist Lenny Susskind expressed strong skepticism about string theory, stating unequivocally that it is not the theory of the real world. He acknowledged that while string theory has contributed to understanding the coexistence of gravitation and quantum mechanics, it has not successfully produced a viable theory of elementary particles. Susskind suggested that alternative "string-inspired" theories might hold potential, but emphasized the uncertainty surrounding their relevance. He criticized the notion that simply breaking supersymmetry would yield results, noting that decades of attempts have not succeeded. The discussion also touched on the hype surrounding string theory and the need for scientists to communicate more responsibly with the public. Susskind agreed that while excitement in the field is important, it is crucial to avoid misleading claims about the capabilities of string theory. He highlighted the tension between maintaining enthusiasm and ensuring accurate public understanding. The conversation raised questions about the future of theoretical physics, particularly regarding the direction young researchers should take if string theory is deemed unproductive.

- Lenny Susskind asserts that string theory is not the correct theory for understanding the real world.

- He acknowledges the uncertainty surrounding alternative "string-inspired" theories.

- Susskind criticizes the oversimplified belief that breaking supersymmetry will resolve issues in string theory.

- The importance of responsible communication about scientific theories to the public is emphasized.

- The future direction of theoretical physics remains uncertain, especially for new researchers.