Part 2/9:
Weinstein asserts that modern theoretical physics is at a standstill, unable to produce innovative results comparable to earlier breakthroughs. One key issue he identifies is the problematic concept of the cosmological constant, introduced by Einstein himself. Often debated as either a monumental blunder or a stroke of genius, Weinstein argues that it lacks an adequate explanation and has become a sort of crutch upon which physicists lean too heavily.