Interesting point about the “rules.” I could run these three examples the same way, but I don’t think I will. They don’t have the same role in the experiment – in this case there is no challenge to identify whether or not their is a difference, the nature of the difference, or arrange the images in any particular way. Here, I’m pretty certain that the differences is pretty obvious, as it was intended to be.

That said, anyone who wants to test whether or not a difference would be visible can use the images to set up their own personal sequence. In fact, you can easily do it by opening three copies of the page containing the images in three different browser tabs. Use the vertical “thumb” to scroll them so that a different images appears on your screen in each tab and then simply switch among the tabs to compare.

Dan