There are hundreds of billions of galaxies in the universe.

Each galaxy contains hundreds of billions, if not, trillions of stars.

There are millions of trillions of stars.

There are tens of millions of trillions of planets.

Quadrillions of the planets are Precambrian.

Trillions of them are suitable for evolved earthlike creatures.

Billions are type O civilizations, still using fossil fuels.

Millions are type 1, harnessing their planet's energy.

Hundreds of thousands are type 2, harnessing their sun's energy.

Thousands are type...