Although I agree with your conclusion, what you say here is now generally believed to be false. Evolution is now believed not to be a smooth continuous process but to be a series of disjointed quantum leaps, probably associated with genetic mutation.
Quite untrue. Puncuated equilibria as opposed to phyletic gradualism is by no means accepted dogma. It is a theory with some support but by no means a done deal. Most discussion about evolution in this thread is dead wrong anyway. SJG would have loved you...