It is one of the leading Late filters; that excellence in the species cannot compensate for the inefficiencies in extracting energy to continue existing; leadin

It is one of the leading Late filters; that excellence in the species cannot compensate for the inefficiencies in extracting energy to continue existing; leading to environmental/social problems, inevitably leading to either environmental collapse, preventing space colonialism, or social collapse. Nuclear energy is a popular crux, but not needed per se. https://www.youtube.com/watch?v=cCzpYxedIe0 https://www.youtube.com/watch?v=cCzpYxedIe0