Number theorists do it a prime number of times. Particle physicists Particle physicists do it with different flavours. Particle physicists do it with three colours and anti-colours. Particle physicists do it with Feynman diagrams. Physicists Physicists do it on the event horizon.
Physicists do it in waves.
Physicists do it with ropes and pulleys. Physicists do it with vectors. Physicists do it at the right moments. Physicists do it with force. Physicists do it on the spur of the moment.