Skepticism, Science & Pseudoscience

What are the mathematical odds for intelligent life existing in a certain volume of space-time?

The universe is 13.6 billion years old.
Our sun and planet are a few billion years old.
Life on Earth is 500 million years old.
Intelligent Life on Earth is 100,000 years old.
Civilization is 20,000 years old.
Civilization capable of reaching beyond its own planet is less than 100 years old.



What are the odds for that?

What are the odds for a planet being capable of supporting life?

What are the odds of life springing into existence from random chemical processes?

What are the odds of a situation occuring where intelligence gets favored by evolution?
(In all of the history of Earth it happened just once: In the african Savannah, when weak primates faced perfect predators.)

What are the odds of these intelligent beings thriving long enough to build a civilization?

What are the odds of these intelligent beings discovering science?
(The scientific method is a result of multiple theological, philosophical, social and political coincidences. Without the scientific method, we would still be on a medieval level, technologically and culturally.)