Hello all. First off, i would like to apologize for having to ask this question on a physics forum. As you will soon see, i know next to nothing about physics, but this is a question that's been troubling me for years, and i've never found an answer to it. So hopefully one of you good people can give me a quick answer, and i'll leave you to do your thing! Sorry if i picked the wrong forum. So hear goes... It's my understanding that when i look into a mirror, i'm having light reflected to me from a 2-dimensional surface. Yet, when i look at myself in the mirror, the background gets blurred and out of focus, just like it does when i look at objects in the real world. I look at the background and i become out of focus and blurred. What's going on here? How does a 2-dimensional image have 3-dimensional depth? I don't consider myself a stupid person, but this really does baffle me. So yes, i know absolutely nothing about physics. Laugh or don't laugh, help or don't help, but it's a question i had to ask. Thanks to anyone who can answer this for me.