I want to know the answer to the following question:
Who said "the outline of the life must be true: birth, maturity, renunciation, search, awakening and liberation, teaching, death."?
All the background I'm provided with is that "In writing her biography of the Buddha, Karen Armstrong noted, "It is obviously difficult, therefore, to write a biography of the Buddha that meets modern criteria, because we have very little information that can be considered historically sound...". Is that enough to answer the question?
Answer: no