optical illusion.
Have you ever stopped to examine if you're seeing something in front of you for what it truly is? I can't even answer that with much conviction. Science gives me answers I seek about the world, but the more I know, the more puzzled I become. I find it difficult to understand why our eyes are made as such. And I don't understand, then, why we rely so much on something so imperfect. Even something as elementary as the wavelengths of visible light, the physics behind why our eyes register colors as such, contradicts what I thought was the most perfect organ of the human anatomy. It's been said that our eyes evolved out of the need for survival. Natural Selection. Some deep sea creatures don't evolve eyes, and these species have been around for a very very long time, as long as, if not longer than human beings have.
How am I to trust what I see, if my eyes can't even perceive colors for what they truly are? The grass is green. No. It appears green because (the cromophores in) grass absorbs all other colors of light (indigo, blue, violet, red etc.) but reflects green, and only because of that, our eyes detects the color green. But if you think about it, how can something that rejects something (in this case, the color green reflected) become exactly what it rejects? When it is obviously not?
Just one of the many things that I can grudgingly accept, but never understand I guess.