Please show your working. Downloading >400KB, unpacking it, parsing it, running it is always faster across the board than just downloading the images? Interacti

Please show your working. Downloading >400KB, unpacking it, parsing it, running it is always faster across the board than just downloading the images? Interactivity? Please, I can scroll the page without the images or vast amount of JavaScript being loaded. What gain has interactivity on this article? How does your point related to the fact that there's a vast amount of JS in the page, where the author tells us no to do so.