"If a sensory stimulus is like a
pebble and our neural network is like a pond, then implicit knowledge is the set of waves that travel across the pond without hindrance when the pebble is dropped into its center, and explicit knowledge is the set of waves that results from the pebble's original waves encountering a
partial barrier that bounces back some of the waves allowing them to interact again with the out
- moving waves. The explicit is more complicated, more interesting, more filled with information (in the information theory sense), but the implicit is more graceful and efficient."