Late to the party but as a layperson who knows just enough about programming to be dangerous, I found the article to be enlightening.
Never assumed that reading it would turn me into an expert at it. Never heard of big O till now but find it a fascinating way to look at algorithm construction.
One more thing: if every article about everything has to be a flawless exhaustive explanation then I suppose only 13 people would even know about relativity. There is plenty of room for content that simply introduces an idea and leaves filling in the gaps to the reader's discretion.
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