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Perception of Color

Do We Live in a Universe Hospitable to Our Aspirations?

Lee Smolin | Posted 07.08.2013 | Science
Lee Smolin

Our belief in the value of human aspirations has been often challenged by voices claiming that all these valued aspects of our humanity must be illusions. Can on construct a scientific conception of the world that permits a hopeful view of the human future?

Understanding Color Perception: Is Your 'Red' The Same As My 'Red?'

Mark Changizi, Ph.D. | Posted 12.02.2011 | Healthy Living
Mark Changizi, Ph.D.

How do we know that your "red" looks the same as my "red"? For all we know, your "red" looks like my "blue." In fact, for all we know your "red" looks nothing like any of my colors at all.