I was so surprised the first time I saw this. I mostly work alone and my workflow is usually study an example (docs or project), collect information (books and article), and iteratively build a prototype while learning the domain. Then I saw a colleague literally copying and pasting stuff, hoping that the errors go away in his project. After he asked for my help, I tell him to describe how he planned to solve the problem and he couldn't. For him, it was just endless tweaking until he got something working. And he could have understood the (smallish) problem space by watching one or two videos on YouTube.