> Even the deadliest plagues didn't kill everyone...
That is logically flawed; the species that were killed off by plagues aren't around to say that. Every species exists in a state of "the deadliest plagues [we've experienced so far] didn't kill everyone". You can say that about literally every threat - we know we have overcome everything thrown at us so far because we are still here. That will continue to be the case for everything that humanity ever faces except for 1 thing (we aren't certain what yet).
But we know that species go extinct from time to time, so the logic that we've overcome things in the past ergo we are safe doesn't make sense for ruling out even many well known threats. Let alone systems that can outplan us; we've never faced inhuman competitors that can strategise more effectively than a human.
That is logically flawed; the species that were killed off by plagues aren't around to say that. Every species exists in a state of "the deadliest plagues [we've experienced so far] didn't kill everyone". You can say that about literally every threat - we know we have overcome everything thrown at us so far because we are still here. That will continue to be the case for everything that humanity ever faces except for 1 thing (we aren't certain what yet).
But we know that species go extinct from time to time, so the logic that we've overcome things in the past ergo we are safe doesn't make sense for ruling out even many well known threats. Let alone systems that can outplan us; we've never faced inhuman competitors that can strategise more effectively than a human.