Skilled people without a process will always find a way to get things done. Skill begets process. But process doesn’t beget skill. Following a recipe won’t make you a great chef – it just means you can make a competent bolognese. Great chefs don’t need cookery books. They know their medium and their ingredients so well that they can find excellent combinations as they go. The recipe becomes a natural by-product of their work.
From http://the-pastry-box-project.net/cennydd-bowles/2012-march-...
Besides, skill may beget product, but it doesn't necessarily beget process.
Oh boy, talk about not seeing the forest for the trees. For skill to beget a successful product, you must follow a process to get from nothing to product. So in the course of creating a successful product you have automatically created a process -- the process to build the product. That process may be used one time, or multiple times -- but it's still a process.
Having just (as in hours ago) been through the wringer of adding new features to a mass of spaghetti that had not been touched in 10 years, the only way I could maintain my sanity (and have some assurance beyond regression testing) that I wasn't breaking something, was to refactor the existing code and then insert my changes.
But the assumption that's wrong is that all processes avoid mistakes. Clearly they don't.
And some of the examples here are just plain cargo cult misapplications of good ideas. The point behind code review is to catch design flaws in new code. You never want to demand refactoring of existing code in order to patch features, that hurts, it doesn't help.