Great writing, big questions...just what you'd expect from a Booker finalist. A masterful revealing of the narrator's family story and how an experiment on an animal left lasting affects on the whole family. The novel compliments Colin McAdam's A Beautiful Truth (2013) which tells a version of this story from another point of view. Then there is Yann Martel's The High Mountains of Portugal (2016). All grapple with the big important question: what does it mean to be human.