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rhizome
you lost me about three paragraphs in. if "simple" relies on dropping terms like "preorder traversal" without elaboration, it ain't simple. i could tell it was probably funny, though!
motxilo
Yes, that was a good point where preorder, inorder and postorder might have been introduced briefly. I liked big time this explanation as to how to mechanize your thoughts when keeping track of a recursive process.
[dead] si2
I enjoyed this article. Not the best description of recursion, but clear none the less.
StanDarsh
I could have used this when I was first introduced to recursion.

"Recursion doesn’t know it’s recursion. Recursion doesn’t know it’s complicated"....awesome.