The Fermi paradox is the conflict between the lack of clear, obvious evidence for extraterrestrial life and various high estimates for their existence. Maybe because we are alone and if they exist at all are so far distant as to be unapproachable.
This is often called the Great Filter theory. It suggests that all life must overcome certain challenges, and at least one hurdle is nearly impossible to clear.
This discussion will be lightly structured with ample time for open discussion. We will discuss planetary and astronomical conditions which filter the development of life. What are the geological and biotic filters for the abiogenesis of life and the evolution of complex life forms? Finally, what are the potential cultural filters associated with advanced civilizations capable of developing their solar resources and exploring the galaxy?