Saying that an effect is negligible is useful to actually do physics ; but when effects practically emerge out of noise - which is what most of the weather is, when it comes to numbers of hurricanes - the noise that emerge out of a butterfly flapping its wing and the noise that comes from the butterfly not flapping its wings are statistically undistinguishable, and thermodynamically too ; but it doesn't prevent them from having different effects.

Un roi sans divertissement est un homme plein de misères