> here we have to assume that the black hole is not rotating very fast I read that, for Interstellar, it's actually very important to include rotation of the b

> here we have to assume that the black hole is not rotating very fast I read that, for Interstellar, it's actually very important to include rotation of the black hole: http://www.slate.com/blogs/bad_astronomy/2014/11/09/interstellar_followup_movie_science_mistake_was_mine.html http://www.slate.com/blogs/bad_astronomy/2014/11/09/interste... > which offer great 'Fermi problems' An aside, but I'm curious. I see this mentioned a lot more often lately, and I know Randall Monroe talks about them a lot in his 'What if?' series, so I'm not sure if it's because of that popularising the term, or if it's just the Baader-Meinhof phenomenon on my part. A Google Trends search suggests increased interest, but it could just be coincidental.