What if there was another advanced species on Earth? Would there be a constant struggle for supremacy? Would we coexist peacefully? What if we had no seasons? What would happen to our crops? What would happen to inventions based upon the need of warmth in Winter? What if we, as humans, were twice as smart? How far advanced would we be? Would society still exist somewhat functionally or be in utter shambles?
*incoming sombre question* What if I die tonight? How long would it take for people to notice I'm gone?