I want to know the answer to the following question:
Why did Darwin introduce a new chapter in On the Origin of Species in the sixth edition?
All the background I'm provided with is that "Much of the chapter responds to George Jackson Mivart's criticisms, including his claim that features such as baleen filters in whales, flatfish with both eyes on one side and the camouflage of stick insects could not have evolved through natural selection because intermediate stages would not have been adaptive.". Is that enough to answer the question?
Answer: no