This is neat, I’m pretty good seeing magic eyes. Something happened on my second visit to the site though, I see the Pi almost double-vision - four vertical legs instead of two, and the top bar has a second narrower bar superimposed on top, essentially 3 depth layers instead of usual 2 layers. Is it possible there’s harmonic focal point distances?
That’s an interesting way of looking at it. When this happens, it means your eyes are crossed too much. I solve this by relaxing and catching it before my eyes get fully straight. Doing this is usually easier than seeing it the first time.