Part 2/10:
We’ve Already Met Them: Encounters with alien beings in our past, either as ancient visitors or as observers, present an intriguing concept. If indeed they have interacted with humanity, they would possess a comprehensive understanding of our societies.
We Find Their Ruins: Discovering the remnants of an extinct civilization can offer insight into their existence, culture, and downfall. This presents a unique opportunity for cautious study, allowing us to construct a narrative of their lives without direct interaction.
We See Signs of Them from a Distance: Life, particularly intelligent life, leaves traces of its existence. Detecting signals or changes in atmospheric compositions on distant planets can be indications of life we cannot yet see or contact.