I am not sure, but it is not funny anymore because I see the 12 points every time. Maybe my brain just recorded the pattern and remember it. I can not switch back again.
Also is truth that I work with crystal simetry pattern daily, so, maybe my brain is trained to see patterns and keep it. Also, in this occasion, I knew what was looking for...
This make me think how different we perceive the universe around us... Even when everybody is seeing the same thing...