I was discussing this once with a friend, he said he thought the idea was a cop-out, and I was wondering what the physics people here think. It just seems to me that no matter how sophisticated our technology and theories get, there are just some things we will never understand regarding this universe, at least with ordinary logic. Here are some examples: 1) Are matter and energy really the same? Is there really a tiniest particle? ("God" particle?) 2) Is time a concept created by humans or an actual thing? 3) How is light both a wave and a particle? (or is it likely something much stranger, just for practical purposes we call it both) 4) How are photons created when the electrons change energy levels? I mean where do they come from? 5) WHAT is the "electromagnetic force?" Gravity they believe is a bend in the curvature of space-time, but WHAT is it that makes protons push away from each other or electrons push away from one another, or protons and electrons attract each other? (and if anyone says it's "just a force" my head will explode) 6) What exactly is "space-time?" It is hard to imagine space-time bending in more than a 2D example. For example, I can grasp the basic concept of the planet sitting on the "sheet" of space-time and "sinking" in some, and thus approaching objects get "pulled" in via the bend, except this is just the 2D example, it (the bending) actually happens from every angle. 7) Are there any more than three dimensions? From what I understand, as it is, this idea of more than three dimensions is only theory, and all empirical evidence thus far shows only three dimensions. An interesting book I was reading suggested that modern physics has in certain ways become like the ancient religions of the East, in that due to the scientists' inability to understand certain aspects of nature with logic, they create paradoxes (like the wave-particle duality of light) to explain it. The book said this almost makes physics resemble the ancient religions with their crazy-sounding paradoxes as well, which may sound hokey to many, but in hindsight the ancients may have been wiser than realized. I was wondering what people think of the role of metaphysics? From what I understand, metaphysics was more studied back in the 19th century, but nowadays, no serious physicist, even if they consider the subject, will say so publicly for fear of damaging their career. But because of the limitations physicists run into in trying to understand the world through logic, wouldn't metaphysical principles apply? Metaphysics wouldn't be promoting magic or anything, just the idea that there are aspects of the world that cannot be understood by the rational, logical human mind, and that one must go to a "higher plane" or whatnot to be able to comprehend the makings of the universe at that level. From what I understand, this was the idea of many of the paradoxes of the ancient Eastern religions, that since so much of the universe and nature is not understandable with logic, the only thing to do is understand it via paradoxes and then the idea was to meditate on the paradoxes and try to reach that "higher plane" of mind and thus understanding ("Enlightenment").