The flip side is that if you follow this advice religiously, a disproportionate amount of your time <i>will</i> be spent tracking down bugs that are the fault of the OS, compiler, or (most commonly) framework & libraries. Assume that most bugs are your fault, and you'll end up putting in place mechanisms to catch, find, and fix bugs quickly. Then if you can fix those quickly, the ones that are left are the ones you <i>didn't</i> cause.