Without presuming any of the Birth Stories you hear are the equivalent of "the one that got away" stories, often they are told as a badge of courage and may be exaggerated for effect.
I ought to apologize to the reader and to Miss Keller for presuming to say what her subject matter is worth, but one more explanation is necessary.
Simply presuming that a science advancement has been achieved to enable the story is fine, and used all the time.
No, Martha Boyd had no idea where her mother was nor did she know the woman's destination, presuming Patsy had one.
This poem is valuable, as, presuming upon the sufficiency of his disguise, Tristan audaciously gives a resume of his feats and of his relations with Iseult, in this agreeing with the version of Thomas.