Which Island's Homo Sapiens Will Survive the Longest?

It is impossible to predict the exact number of years it would take for the human race to expire in this hypothetical scenario. The extinction of humanity would depend on the existing population's age distribution, birth rate, and survival rates without reproducing. Despite this, some factors can play a role in this hypothetical scenario: 1. Adoption of technology: If both islands employ artificial reproductive technologies like in-vitro fertilization (IVF) or surrogacy, the human race could continue to reproduce and maintain the population. These methods could involve sperm or egg donations from the other island or from samples stored prior to the separation. 2. Mutation or evolution: It is essential to consider the possibility of genetic mutations or human evolution, allowing for some form of reproduction without traditional male-female interaction. However, the likelihood of this happening on a scale large enough to prevent extinction is extremely low. 3. Aging population and lifespan: The life expectancy of individuals on both islands would play a significant role in determining how long the human race could survive. Once the older generations pass away and no new individuals are born, the population would steadily decline until there are no humans left. Although it is difficult to provide a specific timeframe, it's clear that the human race would face significant challenges in this situation, both in terms of reproduction and social dynamics. The extinction of humanity could occur within a few generations, over the course of a century or more, given the variables present.