Welcome to part 3 of The Fermi Paradox series. If you have not seen the first 2 episodes yet, I recommend you watch those first. We have discussed introductory concepts, The Rare Earth hypothesis, and now, great filters.
Category 1: Alien Civilizations are Rare.
1A: The Rare Earth Hypothesis (planets birthing and supporting life is astronomically rare).
1B: Great Filters (a hurdle/barrier inhibiting the potential for intelligent life).
1C: Civilizations are short-lived (time discrepancy : section 2B)
Category 2: Alien Civilizations are Difficult To Detect.
2A: They communicate but we are not capable of receiving (technological discrepancies, physical/fundamental discrepancies).
2B: Time discrepancy.
3B: They have no interest in communicating.
4B: They intentionally keep quite.
Category 3: Alien Civilizations are Difficult to Recognize
3A: Aliens are here secretly
3B: Aliens have visited our ancestors
3C: Alien life is not recognizable
*this episode covers the topics highlighted in red.
– Abiogenesis
– Evolutionary Adaption Rate
– Prokaryotes
– Eukaryotes
– Sexual Reproduction
– Food Chain
– Stable Land Mass
– Language
– Fire
– Metals
– Scholars