Thanks for the article, good read indeed.

one thing i will add tho, while i agree you should comment code, i believe (and was always taught) not to over comment, there isnt a single thing worse than code that is obstructed by a small novel being written about a simple function or a an echo for example, you need to implement some common sense on that.

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mysql> SELECT * FROM `users` WHERE `users`.`clue` > 0;
Empty set (0.00 sec)