The last picture includes you, standing at the entrance to the short-term memory “meadow.”
But, you’re doing more than just passively watching the animal traffic file into your brain, wherever they want to go. You direct the herds of “animals” as they file through the pass (your senses), across the “meadow” (your STM), and into your long-term memory where YOU want them to go.
You are taking an active role in the memorizing. In other words, you’re paying attention.