Past weekend the Amsterdam RAI was the centre of the PHP universe as there the 2010 edition of the Dutch PHP Conference was held. Similar to past year it consisted of two presentation days, which I attended, preceded by a tutorial day. Among the presentations I attended on the first day were: Kevlin Henney’s keynote presentation, titled 97 Things every programmer should know. I suppose every attendant will have recognised some of the things he addressed, like “Do lots of deliberate practice” or “Hard work does not pay off”.…