I thought this was interesting: "She found selecting, moving and orientating the photos very intuitive using natural gestures. She took a little guidance to get

I thought this was interesting: "She found selecting, moving and orientating the photos very intuitive using natural gestures. She took a little guidance to get a handle on photo resizing but by the time she’d played for 15 minutes she had got to grips with it and could shrink and enlarge the photos with relative ease." So moving images was easy and resizing them was hard. 15 minutes seems like a long time for a 4 year-old to learn a skill like that relatively well. I think the conclusion you can draw from this, and the rest of the article, is that she could quickly do things that behaved exactly as they do in the real world (e.g. pushing a picture across a table), but things fell apart as soon as a new action had to be learned. That's why some of the actions seemed "intuitive," because they fit exactly into previous experience. I wonder if it would have been easier for her if they had played the "stretch a newspaper comic with silly putty" game a few days before.