Imagine a universe of only two dimensions (like a sheet of paper) inhabited by flat beings. These beings know up, down, left, and right, but the concept of "upwards" (towards us in 3D) is completely incomprehensible to them.

If a three-dimensional object, like an apple, were to cross their paper world, the flat beings would not see the whole apple. They would only see cross-sections: a point that turns into a small circle, then a larger one, and finally disappears when the apple finishes crossing. Their 2D brains can only perceive "slices" of 3D reality.

If an object with four spatial dimensions were to enter our world, we would only see three-dimensional "slices" of it.

Conway's Game of Life, but make it dance. This sketch simulates the famous cellular automaton where each generation "ticks" forward based on the beat of the music. The colors shift across a cool spectrum, and you can tap the screen to inject chaos (random patterns) into the system. Watch as order emerges from disorder, pulsed by the bassline.