Part 8/10:
Assuming a futuristic model of "generation ships" capable of sustaining human life among several generations would require advanced self-sustaining ecosystems. Each generation would continue the journey, yet the risks of radiation, micrometeoroid impacts, and psychological strain make the endeavor daunting.
Even if time dilation were taken into account—where time passes at different rates for travelers moving at relativistic speeds—the daunting logistics of sustaining long-duration missions creates a nightmare scenario wherein generations of travelers might live in isolation, detached from their origins.