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An optical illusion of a man's colour-changing jumper is confusing everyone
Another optical illusion has taken the internet by storm, this time depicting a pair of Crocs with socks
Once you see it, you can't unsee it.
A user posted the picture on Reddit in the hopes of getting some answers, but it appears more questions followed
This optical illusion is supposed to show a mermaid or a fish but people are seeing something else.
The illusion is named after Paul Troxler, a Swiss physician and philosopher
Some people see lots of numbers, some barely see any