Cyclical Universe Models and Their Viability

This chapter explores cyclical or oscillating models of the universe, highlighting their historical context and decline due to thermodynamic challenges. It discusses misconceptions surrounding quantum fluctuations, the implications of the Bohr-Guth theorem, and the necessity of a finite past supported by thermodynamic evidence. The conversation also interrogates the interplay between classical cosmology and modern quantum mechanics, emphasizing ongoing developments in understanding the universe's origins.