Critical thinking in web development seems similar to conducting psychological experiments using the scientific method as explained in Chapter One. Watching the video over and over again and starting and stopping it is like establishing the theory and hypothesis. Typing out the code and then checking the results in the browser or inspect element is like testing the theory. Then trying new things to see what happens is like changing the independent variables of the experiment. So, when we learn how to create web pages, we learn how to conduct experiments.