Part 4/10:
The laws of physics serve as a guiding map, revealing the staggering energy demands and risk factors associated with any conceivable form of interstellar travel. Current propulsion technologies are inadequate for such expansive journeys, as even hypothetical scenarios of human colonization depend on a capability to move beyond light speed—something that lies firmly in the realm of fantasy.
Moreover, visions of mass migrations to other celestial bodies will likely never materialize. The realities of population growth, environmental collapse, and the ecological impact of colonization remain pressing concerns. Even the notion of relocating a fraction of humanity brings to the forefront the ethical considerations of who would be saved in case of catastrophic events on Earth.