[mbauman]

Here's the non-sensical part — it's using the energy per fission of U-235. U-238 releases energy at a rate of 4 MeV at a half life of 4.468 billion years. That won't decay fast enough or energetically enough to sustain you unless your stomach is breeding fast neutrons — I think it's like 0.0000001646 dietary Calories per day.

[epups]

Everything about it non-sensical, even ChatGPT knows that. If you ask it to calculate how long it can sustain you on radioactivity alone it could also calculate that, but this is the more interesting calculation in my opinion.

[mbauman]

There's a logical disconnect in this jump though:

> Uranium-238 (U-238) is a radioactive isotope that releases energy through the process of radioactive decay. The energy content of uranium-238 can be calculated based on its energy release per fission event.

U-238 almost never decays by fission, but boy does this read like it would.