Scalar Memes

This meme brilliantly exploits the physics distinction between scalar and vector quantities. In physics, speed is just a magnitude (how fast something's going), while velocity includes both speed AND direction. So technically, the movie "Speed" couldn't have a director because it would need direction to be called "Velocity"! It's a perfect nerdy physics joke disguised as movie trivia. The expression on Keanu's face makes it even better - looking confused as if he just realized this fundamental scientific error while riding a bus that can't slow down.