20211222 : bouncing balls
There are many balls bouncing about all the time. When we take a snapshot of this, they all seem stationary. Some are up, some down, some somewhere... But they are all in motion going up or going down. When it is up, it becomes slow - very hard for the ball to make out if it will continue going up or turn back down. However, for the one that is down, the impact with the ground is unmistakable. Sure, it is at the lowest point. But there is only one direction to go from there. It is very powerful to know that...