# Bekenstein bound and black hole

I'm confused with this sentence from Wikipedia:

"Upon exceeding the Bekenstein bound a storage medium would collapse into a black hole."

Does that mean "the storage medium will become a black hole". Is it just a metaphor? If it is correct, can a human brain become a black hole? (Suppose that the brain's data exceeds the Bekenstein Bound)

A human brain will never become a black hole because it cannot get anywhere near the Bekenstein bound. The bound for a brain is on the order of $$10^{42}$$ bits, but there are only about $$10^{28}$$ atoms in an entire human body. So there is no need to worry, if you were worried about this.