Thinking like a scientist is really hard, even for scientists. It requires putting aside your own prior beliefs, evaluating the quality and meaning of the evidence before you, and weighing it in the context of earlier findings. But parking your own agenda and staying objective is not the human way.
One of the things that this article warns about is the seduction of anecdotal evidence. I’ll give some of that now.
It seems to me that some students treat simple texts as if they were simplistic and obvious. A text that offers a quick interpretation is often more poorly analysed than an obviously challenging one. Parts of courses (or instructions) that seem clear are often ignored.