I should have asked Agnes Callard a few weeks ago when I interviewed her and it is that episode hasn't aired yet but it will by the time this episode airs. Both light men and Callard are interested in life's meaning and so Agnes was making the case for why why we how we find meaning in being part of the enterprise of discovery. Even though she may end up not have any ancestors 10,000 years from now she is part of a great chain of human effort to understand our ourselves.