Let me start by saying that I am an idiot when it comes to the formulas and actual inner workings of physics. I'm pretty smart in most other areas, but I suck at math and I've never taken the time to really do any hardcore study on physics. However, I LOVE to read the "dumbed-down" books on things like probability/chaos theory, resonance, and the like. So let me ask a question. My very basic understanding of resonance indicates to me that resonance is sort of the very basis for everything. When used properly you can get results that would normally expend energy, but with actually expending any. So, is there any plausibility in the idea of a resonance engine for deep space travel? I have no real idea how it would work (again, I'm dumb on the actual inner workings of this stuff). I'm writing a story in which I've decided to use it as a gimmick, but my reason for asking here is because I am genuinely interested. The story is sci-fi, and I have no qualms about making things up if I have to (though I always like sci-fi with real science), but I would like to discuss this for reason of my own enlightenment.