Plain English explanation of Big O
stackoverflow.com
stackoverflow.com
https://www.hnsearch.com/search#request/all&q=title%3A%2...
The longest discussion is from nearly three years ago: https://news.ycombinator.com/item?id=1520552
It seems a popular topic here on HN, there are many references to the Big-O Notation:
https://www.hnsearch.com/search#request/all&q=big+o+nota...
A theme I've seen crop up several times is that the authors of the articles often either don't explain it clearly, or actively get it wrong.
Read with care random ramblings from the interwebs.