When an old woman somersaults on a zebra crossing, and time freezes at that precise moment, we find ourselves in a paradoxical predicament. The classical laws of motion lose their meaning, because speed and acceleration disappear as soon as time itself stands still. And yet, there lies a body – fixed in a state of transformation – a living singularity that you, as a walker, can either navigate past or disappear into. The problem can be formulated as follows: We have a stationary object (the woman in a somersault position), which has a three-dimensional form. You yourself are at the starting point of the zebra crossing and wish to reach the other side without coming into contact with the time singularity she creates.