That argumentation is a bit silly. Chaotic systems are not necessarily unpredictable. For example take the pendulum that swings among the magnets (one of those

That argumentation is a bit silly. Chaotic systems are not necessarily unpredictable. For example take the pendulum that swings among the magnets (one of those classic examples). So the exact path of the pendulum might be unpredictable, but it is predictable that it will reach equilibrium eventually. What I mean is: some aspects can be predictable while others are not predictable. Therefore your argument is wrong.