Where there is light, there is always a shadow close behind. It follows you where ever you go

Just think

What follows the sun, the moon.

What follows when you turn on a light, you turn it off.

What follows the tv turning on, it turns off.

But then we have the flip side

What follows the moon, the sun.

What follows you turning off a light, you turn it back on.

What follows the tv turning off,...