Youseef J.
Wonderful
exists a bottleneck or series of bottlenecks on the path to complex life or advanced civilizations. The emergence of life itself might be a hurdle, or perhaps the leap from single-celled organisms to multicellular ones. Maybe the development of intelligence is incredibly improbable, or perhaps even advanced civilizations inevitably self-destruct through war, resource depletion, or unforeseen existential threats. Th



