(Bloomberg Opinion) -- Have a look, if you would, at this image: Is it a duck, or is it a rabbit? Many people see it as a duck; many others see it as a rabbit. You might see it as one and then as the ...

Ever since it was published in 1892, the rabbit-duck illusion has been perplexing viewers with its remarkable ability to shapeshift. Does it show a rabbit and then a duck, a duck and then a rabbit, ...

Is this a rabbit or a duck? The answer you give to this classic optical illusion says a lot about your brain, psychologists claim. It first appeared in a German magazine in 1892 under the title ...