> It seems a bit reckless to assume that ANY AND EVERY high-tech alien civilization would produce conclusive evidence on a scale such that any civilization like

> It seems a bit reckless to assume that ANY AND EVERY high-tech alien civilization would produce conclusive evidence on a scale such that any civilization like modern humanity around any given star would be able to detect it. "ANY AND EVERY" is not remotely a part of any plausible premise of either the Great Filter or the Fermi paradox. Please be charitable in stating assumptions of theories you disagree with.