Here's what the image looked like to me.
The left image is the original icon, enlarged and blurred to the amount of blur I saw. The right image is a reconstruction of what my brain did with the blur. And I saw the other icon as a cowboy afterward, because I was watching for the cowboy image.
The subjective reconstruction of a fuzzy image by the brain is often dependent of previous experience. This is why too many people turn ordinary objects at a distance into UFOs. In my case, there were cowboys and cowgirls in my family when I was a kid.
And I had never seen either icon before in any context. Both were new icons.