I have been here for four years.  Two engineers and three coding researchers have been here longer than me.  Three engineers and one coding researcher have been here less.  In that time a grand total of three engineers and one researcher have left, so we average one per year.<p>At my previous large company, where I spent nearly ten years, I can count on one hand the number of engineers who left for reasons other than firing or retirement.<p>This &quot;engineer churn&quot; is very much a product of certain overheated markets.  For most of the world it just is not the case.  In fact, that is my main issue with articles like this.  Not every market is overheated like the Valley, and you cannot cast what goes on there like it is the way the world works.