You might enjoy this discussion: https://news.ycombinator.com/item?id=41942096
Has anyone had the experience where if you try to watch an anthill (or just many ants in one place), your vision gets out of focus after a couple of seconds? And you can't just re-focus, even after turning away from the ants. It takes a while until you are able to focus again.
It's very relaxing. I'm wondering if this is the same effect they are after with the animation.