Acting is great. And it's plausible in its portrayal of sibling interrelationships. But so much of the remaining plot gimmicks are not how any people I know in real life actually act, outside of this contrived plot. But, ultimately the biggest beef I have is how a family so accepting of its own quirks is so unaccepting of an outsider as portrayed by SJP. I joked they should retitle it "The Famiily Mengele."