yes, amascuba is confusing. Says he believes in evolution, but does believe that the introduction of the lionfish could have happened "naturally." If he understood anything about the science of evolution, he would understand that this is a contradictory statement. Evolution is a slow process that happens over tens of thousands of years, not a decade. If he continues to think otherwise, he needs to show us the science. Otherwise, I remain unconvinced.
Also, I don't think he is going to be able to sit back and watch nature take its course, seeing how an ecosystem is developed over tens of thousands of years. However, he will be able to watch the destruction. First the small fish, shrimp and crustaceans will disappear, as what is documented to be happening now. Then the larger animals that feed on them will disappear - that is the next stage that will happen, and yes, he will probably witness that too. Corals will die-off. Yes, nature will eventually recover, but neither he, nor his children, nor their children or their children for next several thousand years will have the opportunity to sit back and watch it happen. So, what is the show that he will be around to witness? Well, I guess if you call total destruction a show, then grab the popcorn. That's the part you won't miss.