By using the Kardashev Scale, we can address some big questions about alien civilizations. Like: Fermi's Paradox. It's estimated that there are 40 billion Earth-like planets in the Milky Way that ...

If Earth isn't the only planet capable of supporting ... The idea is that before a civilization can make it very far along the Kardashev scale of intelligence, it hits a wall — a filter ...

On a Kardashev scale, humanity is currently at Type 0 civilization ... To reach a Type I civilization, we must master all the forms of energy on Earth, not just fossil fuels.

He ties his solar vision to the Kardashev Scale, which categorizes civilizations by energy use. Musk points out humanity hasn’t even achieved Type I, where Earth’s resources are fully utilized.