Okay well on page 164 (https://www.withouthotair.com/c24/page_164.shtml) MacKay writes: "If fast reactors are 60 times more efficient, the same extraction of ocean uranium could deliver 420 kWh per day per person." Granted, this depends on fast breeder reactors and ocean extraction of uranium, but those are both experimentally proven technologies.

Why wouldn't we adopt the only energy source that has been shown to scale to provide the entire world with Western levels of energy for 1,000 years?