A second point to add, which is not usually made clear, is that particular experimental conditions determine the shape of a
cell in phase space, representing the uncertainty in the classical properties of the electron.
Time is mapped onto the (horizontal) x-axis, and the interceptions
found in the phase space (Fig. 2) are projected onto the (vertical) y - axis.
A chaotic system simply moves in a
trajectory in its phase space and it is impossible (impossible not because of lack of data, but because it is — well — impossible) to forecast precisely where it will be at a given moment in the future.