“It was an accident. It had to do with random mutations in our DNA that, at the time, didn’t matter. We were already getting plenty of vitamin C coming up out of our liver. It came from our food and was not broken down in our stomach, intestines, or liver. It emerged into the bloodstream intact, readily available to all of our cells. We lost the ability to make it ourselves, without becoming extinct, because we didn’t need to make it. And more than that, we reproduced faster than our associates who had not lost the ability to make it.”
―
Kary Mullis,
Dancing Naked in the Mind Field