The problem I personally have with the Fermi paradox is that it essentially works if you assume that every non-zero probability is one, and justify that with th

The problem I personally have with the Fermi paradox is that it essentially works if you assume that every non-zero probability is one, and justify that with there being enough chances for life to get going that it's bound to happen. Except... there really isn't all that much slack. Another point that I don't see addressed much is the possibility that interstellar travel may just simply be impossible: that building machines that can travel to other stars, let alone ones that are capable of hosting a colonization process, are just simply not within the realm of materials that can actually exist.