@cstross The story doesn't actually mention blood.
I hope Space.com starts comparing everything to human blood. Starliner? It could carry way more astronauts than human blood.
@cstross I should point out, this doesn't RULE OUT using human blood if there are no potatoes and the AI decides it needs more bricks.
This should emphasize to any would-be explorer the need to always have an adequate supply of potatoes on hand.
@cstross For those who, like I, need a link to the article:
https://www.space.com/space-bricks-potato-starch-mars-moon-dirt
and the original papar:
https://www.degruyter.com/document/doi/10.1515/eng-2022-0390/html