This is
an incredibly vague statement; but part of the difficulty with this problem, which also exists in one form or another in many other famous problems (e.g. Riemann hypothesis,, P = NP, twin prime and Goldbach conjectures, normality of digits of Pi, Collatz conjecture, etc.) is that we expect any sufficiently complex (but deterministic) dynamical system to behave «chaotically» or «pseudorandomly», but we still have very few tools for actually making this intuition precise, especially if one is considering deterministic initial data rather than generic data.
I just find it
incredibly sad that scientists who specialize in this field could not come up with more than a single, somewhat
vague, scientific principle to prove you wrong in your
statement that the world probably doesn't need leatherbacks.