This text contemplates the famous statement by the "dark" philosopher Heraclitus, who claimed that the way up and the way down are one and the same. The author explores the literal meaning of this assertion using the example of a road between two cities, where only the direction changes, not the path itself. The reflection then expands this idea into a broader cosmological context. It questions whether the process of universal expansion from the Big Bang is truly symmetrical to a potential future Big Crunch, or if subtle deviations occur over time. The discussion culminates in the hypothesis that the path of being, particularly for organisms, is not reversible but represents a one-way process of aging. From this perspective, the journey from origin to collapse is a single, irreversible trajectory that can be traversed only once. The text thus challenges simple spatial symmetry in favor of temporal and existential linearity.