An example of a visual explanation I would like to see: Suppose the length of your thumb doubles in each step then in 33 steps it would be equal to the distanc

An example of a visual explanation I would like to see: Suppose the length of your thumb doubles in each step then in 33 steps it would be equal to the distance from earth to the moon. I would like to see such an animation, being able to touch the moon with my finger in 33 steps is to grow really fast.