The history of our study of our solar system shows us clearly that accepted and conventional ideas are often wrong, and that fundamental insights can arise from the most unexpected sources.
1992, J. Laskar, page 31 in, Sylvio Ferraz-Mello (editor), "Chaos, resonance, and collective dynamical phenomena in the solar system", International Astronomical Union Symposium,
I would like to stress out that the meaning of unstable for our solar system is very different than for another solar system.
2001, Stuart Ross Taylor, Solar system evolution: a new perspective, 2nd edition, page xiii
Every satellite has turned out to differ in some significant feature from its neighbor: "(..)the sense of novelty would probably not have been greater if we had explored a different solar system".