[Tutor] Real world use of recursion

[Deb Wyatt]

Sorry to bother you all with what you might consider trivia, but someone in my course forum posted this statement: 

"I have never seen or heard of real uses of recursion except for proving cleverness,"

so I thought I would ask you all if that is true.  Is it really not used in real world applications?

Thanks in advance,

Deb in WA, USA

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