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While doubling the efficiency is still great, I'm not sure we should trust people who make errors in such basic calculations to build a freaking nuclear reactor.

75x should have been the red flag from the first mention, it's such a huge figure. It's not like they are switching from fission to fusion.

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It's actually feasible with fast reactors. Conventional reactors fission U235 and a little plutonium which gets bred from U238, but most of the U238 and plutonium just ends up as waste. Fast reactors fission the plutonium just fine, and ultimately can use up virtually all the U238. So they produce very little waste, most of that is short-lived, and they get up to 100x more power out of the same amount of uranium ore.

But Transatomic isn't a fast reactor.

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