There's also no science ruling it out. The closer you look at ecosystem complexity the clearer it becomes that we understand it well enough to make accurate pr

There's also no science ruling it out. The closer you look at ecosystem complexity the clearer it becomes that we understand it well enough to make accurate predictions. Nobody can prove that we're one keystone-species extinction away from calamity, but nobody can prove that we're not, and the rate at which species are going extinct due to our involvement is such that it's not crazy to be expect big changes over small timescales.