Let me begin by saying that I am a friend of Ralph Leighton, whom I have known for 27 years. I am also a friend of Feynman's children, and several of Feynman's friends and colleagues. Now I will tell you this: Collier is a liar. The books "Surely You're Joking, Mr. Feynman" and "What Do You Care What Other People Think" were made the same way that The Feynman Lectures on Physics was made: Feynman was recorded, and the recordings were transcribed and (lightly) edited for readability. It is true for ALL of Feynman's books (also Stephen Hawking's many books, and those of some other authors) that he did not put pen to paper himself, but what is written came from him, and are not the inventions of Ralph Leighton, nor does Leighton claim authorship to them. It is another lie of Collier that the stories in Feynman's autobiographical books are "either made up or greatly exaggerated," for which Collier provides no evidence whatsoever, and for which there are witnesses who claim the contrary - this is something Collier just "made up", because, apparently her goal in making several pejorative videos about Feynman is to defame him, for her own personal reasons. Yes it is true that Ralph Leighton is Robert Leighton's son, and Robert Leighton, who is one of Feynman's coauthors in The Feynman Lectures on Physics, was a great physicist, best known for establishing the field of microwave astronomy. But why would Ralph mention his father in Feynman's autobiographical books, when Robert Leighton is not a character in any of the stories Feynman tells in those books? What kind of criticism is that to make of Ralph? This is another example of how Collier is merely trying to smear the names of Feynman and the people associated with him. Note that Collier also says in her videos that The Feynman Lectures on Physics (the subject of this discussion) is "not worth reading," which puts her at odds with almost everyone who reads it - it is, in fact, one of the most (if not THE most) popular physics books ever written, and many great physicists sing its praises. Once again, this is Collier just dissing Feynman and his works. Collier is a Feynman-hating liar who fully deserves to be ignored.