The thesis of the singularity of the world states that there is one real world. Such a thesis stands in stark contrast to contemporary theoretical physics and cosmology, which speculate about multiple universes out of the dilemma of how to have law like explanations if the universe is unique—laws will be universal because they don't just apply to this unique universe but to all universes. However, there is no empirical evidence for multiple worlds. Unger's singularity thesis can better address our empirical observations and set the conceptual platform to address the four main puzzles in cosmology today: Big Bang, initial conditions, horizon problem, and the precise value of constants, such as gravity, speed of light, and Planck's constant.