The idea of a cyclic universe, where cosmic events repeat infinitely, appeals to those seeking comfort in an eternal existence, contrasting sharply with the linear narrative of the Big Bang. The Big Bang model, while dramatic, presents a one-time event with no possibility for renewal, leading to a cold, empty future. Richard Tolman's early 20th-century vision of a universe that expands and contracts in cycles faces significant hurdles, primarily due to the concept of entropy, which dictates that disorder only increases with each cycle. This accumulation of entropy means that every new cycle is larger and messier than the last, ultimately forcing the system to revert to a singular beginning. Thus, despite the allure of a cyclic universe, the reality of entropy complicates this vision, as it cannot reset itself. The introduction of inflation theory in the late 1970s added further complexity to cosmology, challenging existing models and suggesting new dynamics at play in the universe's evolution. This exploration sets the stage for a deeper examination of inflation in the next part of this series.