Usually it takes a bit longer between when I predict something in writing and when somebody actually invents it.

Last year I wrote a short humorous SF story (you can read it on my other blog here) that features a spacecraft that uses weak magnetic fields to guide plasma around its surface.

I just spotted this story on Slashdot.

Okay, okay, they’re talking about a slightly different use case, and they aren’t speculating about physics.

Still…