The oldest joke

Ever since the initial conditions of existence were set, the particles and forces that formed the silica, that made the glass, that was fit in the frame, that was stuck in the window had been barreling through time and space destined to intersect with elements that roamed the cosmos, that formed the proteins, that replicated down the ages to form a speckle-bellied bird's forehead. And now they met. One minute he was unknowingly labouring under the misapprehension that he had some form of control over his actions and thoughts, the next - BLAM!  He succumbs to a hard piece of glass, an unavoidable instrument of an equally hard deterministic universe. 

Hit the only bloody window without a blind or raptor sticker.