Glowing Walls?

We're taught in our physics classes that light exhibits both "wave-like" and "particle-like" properties. In other words, light travels from one end of the room to the other just like we do when we're sitting on a roller coaster. Up and down, up and down, from one end of the theme park to another (sans stomach sickness, of course). That's a wave-like property. Light also acts like a bowling ball as an ace bowler chucks his trade down the smoothed bowling lane: a particle property.

It seems counter intuitive to describe the way light travels as two contrary motions: a wave and a particle. However, science does necessitate, at times, that we consider wave motion and neglect particle motion, and vice versa.

Assuming that either of these are correct, i.e. light travels simultaneous like a roller coaster and a bowling ball (which could be true in higher dimensions), how does light travel through walls? Thick walls, thin walls, fat walls, or brick walls? Its travel though a slight brick wall must end up looking like a Star War's scene of dogding and darting though both meteor fields and high energy force fields. It's a wonder we can hold a flashlight behind a piece of paper and see anything!

Or, it's amazing we can see stars. And what a special thing a twinkle is.