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Black hole spin

In the Face Book group:
The post was about how fast a black hole will spin.
My comment:

Now I am certainly skeptical about any black hole spin rate. According to the attached story a black hole can spin the entire universe. What does that mean? The universe spins in relation to what? Plus there are 20 BH like it just in our milky way. Does the universe spin about an an axis of rotation at each black hole? There 20 universe centers of rotation? How are these incredible  theories imagined?

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