Comment by kadoban

> Do they?

Pretty sure

> Why not?

https://en.wikipedia.org/wiki/Critical_mass

Technically I guess I can't prove it wouldn't work if you make it dense/hot/covered-in-reflectors enough, but I'm pretty sure it's _well_ beyond the limits of what a fungus could even conceivably do.

Note that the only numbers on that page have various critical masses in kg. That's a bigass fungus.

And that's still not getting into: the "fuel" here is real shit. It's gotta be beyond its useful life even if you ignore that the thing melted down and corroded and blew up.