Evolutions of the perihelion distance of 67P, found by forward integrations of random initial orbits leading into current orbits close to the one of 67P. The time plotted on the abscissa is counted backward from the present. The different colors mark the different examples chosen. We note that these are not clones of 67P, and the recent history of 67P (including the close encounter with Jupiter in 1959) is not reproduced. The focus is on the long-term dynamics, shown in the right part of the diagram. Chaotic divergence of the backward motions sets in, mostly a few centuries ago, due to close encounters with Jupiter. Courtesy Ryszard Gabryszewski.