Last week the internet was drawn into a divisive debate over the perceived color of a dress. Was it blue and black? Or white and gold? What is the truth? The dress in question was essentially an optical illusion, and not the first by a long shot. Oh yes, the newspapers of past years show that humanity has long been fascinated with optical illusions and how they mess with our perception of reality. One truth remains the same through all the articles: don’t always trust what your eyes seem to see.