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.

Simply presuming that a science advancement has been achieved to enable the story is fine, and used all the time.

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.

No, Martha Boyd had no idea where her mother was nor did she know the woman's destination, presuming Patsy had one.

Hours staffers were surprised to see Johnny Depp on the set of their show, presuming that he may be there to promote his film Alice in Wonderland.